diff --git a/telegram_bot/api_handling/api_handler.py b/telegram_bot/api_handling/api_handler.py
index 49751f0..181fd71 100644
--- a/telegram_bot/api_handling/api_handler.py
+++ b/telegram_bot/api_handling/api_handler.py
@@ -12,9 +12,9 @@ __license__ = "None"
 import sys
 import os
 import requests as r
-from croniter import croniter
-
+from croniter import croniter # used for checking cron formatting
 
+# note: for more information about the api visit swagger documentation on https://gruppe1.testsites.info/api/docs#/
 
 class API_Handler:
     """class for interacting with the api webservice
@@ -37,6 +37,7 @@ class API_Handler:
         set_portfolio(user_id, portfolio): sets the portfolio of the user
         delete_portfolio(user_id, portfolio): deletes the portfolio of the user
         set_cron_interval(user_id, interval): sets the cron interval of the user
+        set_admin(email, is_admin): sets the admin status of the user with the given email
     """
     
     
@@ -50,17 +51,17 @@ class API_Handler:
         """
         self.db_adress = db_adress
 
-        payload = {'email': email, 'password': password}
-        with r.Session() as s:
-            p = s.post(self.db_adress + "/user/login", json=payload)
+        payload = {'email': email, 'password': password} # credentials for admin account that has all permissions to get and set data (in this case bot account)
+        with r.Session() as s: # open session
+            p = s.post(self.db_adress + "/user/login", json=payload) # login to webservice
             if p.status_code == 200:
-                self.token = p.json()["data"]['token']
+                self.token = p.json()["data"]['token'] # store token for further authentication of requests
             else:
                 print("Error: " + str(p.status_code) + " invalid credentials")
                 self.token = None
 
 
-    def reauthorize(self, email, password):
+    def reauthorize(self, email, password): # can be used if token expired
         """set new credentials
 
         Args:
@@ -78,7 +79,7 @@ class API_Handler:
                 return None
 
 
-    def get_user(self, user_id, max_retries=10):
+    def get_user(self, user_id, max_retries=10): # max retries are used recursively if the request fails
         """gets the shares of the user
 
         Args:
@@ -92,13 +93,13 @@ class API_Handler:
             return None
 
         with r.Session() as s:
-            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
+            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)} # authorization is bot_token:user_id (user_id is the id of the user you want to get data from)
             req = s.get(self.db_adress + "/user", headers=headers)
             if(req.status_code == 200):
                 return req.json()["data"]
             
             else:
-                return self.get_user(user_id, max_retries-1)
+                return self.get_user(user_id, max_retries-1) # if request fails try again recursively
 
     
     def get_all_users(self, max_retries=10):
@@ -142,10 +143,10 @@ class API_Handler:
             req = s.get(self.db_adress + "/keywords", headers=headers)
             if(req.status_code == 200):
                 keywords_json = req.json()["data"]
-                for keyword in keywords_json:
+                for keyword in keywords_json: # keywords_json is a list of dictionaries
                     keywords.append(keyword["keyword"])
 
-                return keywords
+                return keywords # will be empty if no keywords are set
 
             else:
                 return self.get_user_keywords(user_id, max_retries-1)
@@ -206,7 +207,7 @@ class API_Handler:
                 shares_json = req.json()["data"]
                 shares = []
                 for share in shares_json:
-                    shares.append(share["symbol"])
+                    shares.append(share["isin"]) # we only want the isin of the shares
 
                 return shares
             
@@ -214,23 +215,24 @@ class API_Handler:
                 return self.get_user_shares(user_id, max_retries-1)
 
 
-    def set_share(self, user_id, symbol):
+    def set_share(self, user_id, isin, comment):
         """sets the share of the user
 
         Args:
             user_id (int): id of the user
-            symbol (string): symbol of the share
+            isin (string): isin of the share
+            comment (string): comment of the share
         
         Returns:
             int: status code
         """
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
-            req = s.post(self.db_adress + "/share", json={"symbol": symbol}, headers=headers)
+            req = s.post(self.db_adress + "/share", json={"comment": comment, "isin": isin}, headers=headers) # set share by setting comment and isin, comment can be the real name of the share e.g. "Apple Inc."
             return req.status_code
 
 
-    def delete_share(self, user_id, symbol):
+    def delete_share(self, user_id, isin):
         """deletes the share of the user
 
         Args:
@@ -242,7 +244,7 @@ class API_Handler:
         """
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
-            req = s.delete(self.db_adress + "/share", json={"symbol": symbol}, headers=headers)
+            req = s.delete(self.db_adress + "/share", json={"isin": isin}, headers=headers) # to delete a share only the isin is needed because it is unique, shares are not transactions!
             return req.status_code
 
 
@@ -277,16 +279,16 @@ class API_Handler:
             user_id (int): id of the user
             comment (string): comment of the transaction
             isin (string): isin of the transaction
-            count (int): count of the transaction
+            count (float): count of the transaction
             price (float): price of the transaction
-            time (string): time of the transaction
+            time (string): time of the transaction formatted like e.g. "2011-10-05T14:48:00.000Z"
         
         Returns:
             int: status code
         """
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
-            transaction = {"comment": comment, "count": count, "isin": isin, "price": price, "time": time}
+            transaction = {"comment": str(comment), "count": float(count), "isin": str(isin), "price": float(price), "time": str(time)} # set transaction as JSON with all the attributes needed according to Swagger docs
             req = s.post(self.db_adress + "/transaction", json=transaction, headers=headers)
             return req.status_code
 
@@ -306,9 +308,9 @@ class API_Handler:
 
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
-            req = s.get(self.db_adress + "/portfolio", headers=headers)
+            req = s.get(self.db_adress + "/portfolio", headers=headers) # get portfolio as JSON
             if req.status_code == 200:
-                portfolio_dict = req.json()["data"]
+                portfolio_dict = req.json()["data"] # get the data of the JSON
                 return portfolio_dict
             else:
                 return self.get_user_portfolio(user_id, max_retries-1)
@@ -323,28 +325,46 @@ class API_Handler:
         Returns:
             int: status code
         """
-        if not croniter.is_valid(cron_interval):
+        if not croniter.is_valid(cron_interval): # check if cron_interval is in valid format
             print("Error: Invalid cron format")
-            return -1
+            return -1 # return error code -1 if invalid cron format
 
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
-            req = s.put(self.db_adress + "/user/setCron", json={"cron": cron_interval}, headers=headers)
+            req = s.put(self.db_adress + "/user/setCron", json={"cron": str(cron_interval)}, headers=headers) # put not post (see swagger docs)
             return req.status_code
 
 
-if __name__ == "__main__":
+    def set_admin(self, email, is_admin):
+        """sets the admin of the user
+
+        Args:
+            email (string): email of the user
+            is_admin (String): "true" if user should be Admin, "false" if not
+        
+        Returns:
+            int: status code
+        """
+        with r.Session() as s:
+            headers = {'Authorization': 'Bearer ' + self.token} # only bot token is needed, user is chosen by email
+            req = s.put(self.db_adress + "/user/setAdmin", json={"admin": str(is_admin),"email": str(email)})
+            return req.status_code
+
+
+if __name__ == "__main__": # editable, just for basic on the go testing of new functions
 
     print("This is a module for the telegram bot. It is not intended to be run directly.")
     handler = API_Handler("https://gruppe1.testsites.info/api", "bot@example.com", "bot")
     print(handler.token)
-    keywords = handler.get_user_keywords(user_id = 1709356058) #user_id is currently mine (Linus)
+    keywords = handler.get_user_keywords(user_id = 1709356058) #user_id here is currently mine (Linus)
     print(keywords)
     shares = handler.get_user_portfolio(user_id = 1709356058)
     print("set cron with status: "+ str(handler.set_cron_interval(user_id = 1709356058, cron_interval = "0 0 * * *")))
     user = handler.get_user(user_id = 1709356058)
     print(user)
     all_users = handler.get_all_users()
+    admin_status = handler.set_admin("test@test.com", "true")
+    print(admin_status)
     print(all_users)
     print(shares)
     sys.exit(1)
\ No newline at end of file
diff --git a/telegram_bot/bot.py b/telegram_bot/bot.py
index 6655ad5..9e97a09 100644
--- a/telegram_bot/bot.py
+++ b/telegram_bot/bot.py
@@ -14,6 +14,7 @@ __license__ = "None"
 # API Documentation https://core.telegram.org/bots/api
 # Code examples https://github.com/eternnoir/pyTelegramBotAPI#getting-started
 
+import email
 import os
 
 import telebot
@@ -32,16 +33,15 @@ from dotenv import load_dotenv
 from api_handling.api_handler import API_Handler
 
 
-load_dotenv(dotenv_path='.env')
+load_dotenv(dotenv_path='.env') # load environment variables
 
-bot_version = "1.0.1" 
-user_list = []
+bot_version = "1.0.1" # version of bot
 
 #create api handler
-api_handler = API_Handler("https://gruppe1.testsites.info/api", str(os.getenv("BOT_EMAIL")), str(os.getenv("BOT_PASSWORD")))
+api_handler = API_Handler("https://gruppe1.testsites.info/api", str(os.getenv("BOT_EMAIL")), str(os.getenv("BOT_PASSWORD"))) # get creds from env vars.
 print("Webserver Token: " + str(api_handler.token))
 
-class User: # Currently saving users in this class to test functionality -> later database
+class User: # Currently saving users in this class to test functionality -> later database REMOVABLE
     def __init__(self, p_user_id, p_user_name, p_chat_id):
     
         """ Initialize a new user
@@ -79,14 +79,6 @@ def send_start(message):
 
     :rtype: none
     """
-    new_user = User(int(message.from_user.id), message.from_user.first_name, int(message.chat.id))
-    existing_already = False
-    for known_user in user_list:
-        if known_user.user_id == new_user.user_id:
-            existing_already = True
-    if existing_already == False:
-        user_list.append(new_user)
-        
     bot.reply_to(message, "Welcome to this share bot project. Type /help to get information on what this bot can do")
 
 
@@ -101,11 +93,11 @@ def send_version(message):
 
     :rtype:none
     """
-    bot.reply_to(message, bot_version)
+    bot.reply_to(message, "the current bot version is " + bot_version)
 
 
 @bot.message_handler(commands=['help', 'Help']) # /help -> sending all functions 
-def send_welcome(message):
+def send_help(message):
     
     """ Send all functions
     :type message: message object bot
@@ -115,7 +107,7 @@ def send_welcome(message):
 
     :rtype: none
     """
-    bot.reply_to(message, "/id or /auth get your user id\n/update get updates on your shares.\n/users see all users.\n/me get my user info\n/news get top article for each keyword.\n/allnews get all news (last 7 days)\n/keywords get all your keywords\n/addkeyword add a keyword\n/removekeyword remove a keyword\n/share get price of specific share\n/portfolio see own portfolio\n/newtransaction add new transaction\n/interval get update interval\n/setinterval set update interval\n_For further details see https://gruppe1.testsites.info _", parse_mode='MARKDOWN')
+    bot.reply_to(message, "/id or /auth get your user id\n/update get updates on your shares.\n/setAdmin set admin rights of user (ADMIN)\n/users see all users. (ADMIN)\n/me get my user info\n/news get top article for each keyword.\n/allnews get all news (last 7 days)\n/keywords get all your keywords\n/addkeyword add a keyword\n/removekeyword remove a keyword\n/share get price of specific share\n/portfolio see own portfolio\n/newtransaction add new transaction\n/interval get update interval\n/setinterval set update interval\n_For further details see https://gruppe1.testsites.info _", parse_mode='MARKDOWN')
 
 
 @bot.message_handler(commands=['users', 'Users']) # /users -> sending all users
@@ -129,18 +121,69 @@ def send_all_users(message):
 
     :rtype: none
     """
-    print('Debug: users command')
-    user_id = int(message.from_user.id) 
+
+    user_id = int(message.from_user.id)
+    user_data = api_handler.get_user(user_id) 
+    if(user_data["admin"] == False): # check if user has admin rights
+        bot.reply_to(message, "You have to be an admin to use this command")
+        return
     
-    # tbd check if user is admin
+    user_list = api_handler.get_all_users()
+    user_count = len(user_list)
+    bot.send_message(chat_id=user_id, text="There are " + str(user_count) + " users in the database:")
     
-    answer = 'Current number of users: ' + str(len(user_list))
-    bot.send_message(chat_id = user_id, text=answer)
-    for known_user in user_list:
-        answer = str(known_user.user_id) + ' : ' + known_user.user_name
-        bot.send_message(chat_id=user_id, text=answer)
+    for user in user_list:
+
+        username = user['username']
+        email = user['email']
+        id = user['telegram_user_id']
+        cron = user['cron']
+        admin = user['admin']
+
+        bot.send_message(chat_id=user_id, text=f'Username: {username}\nEmail: {email}\nID: {id}\nCron: {cron}\nAdmin: {admin}') # format user data into readable message text
     
 
+@bot.message_handler(commands=['setAdmin', 'SetAdmin']) # set admin rights to user TBD: not working!!
+def set_admin(message):
+    
+    """ Set admin rights to user
+    :type message: message object bot
+    :param message: message that was reacted to, in this case always containing '/setAdmin'
+
+    :raises: none
+
+    :rtype: none
+    """
+    user_id = int(message.from_user.id)
+    user_data = api_handler.get_user(user_id) 
+
+    if(user_data["admin"] == False): # check if user has admin rights
+        bot.reply_to(message, "You have to be an admin to use this command")
+        return
+
+    bot.send_message(chat_id=user_id, text='send email and "true" if this account should have admin rights, else "false"\n in format: <email>,<is_admin>') # ask for email and admin rights to set
+    bot.register_next_step_handler(message, set_admin_step)
+
+def set_admin_step(message):
+    str_message = str(message.text)
+    args_message = str_message.split(',') # split message into email and admin rights
+
+    if len(args_message) != 2: # make sure 2 args (email,is_admin) are given
+
+        bot.reply_to(message, "exactly 2 arguments (<email>,<is_admin>) required, try again")
+        return
+
+    email = args_message[0]
+    is_admin = args_message[1]
+    status = api_handler.set_admin(email, is_admin) # set admin in db
+    
+    if(status == 200):
+        bot.reply_to(message, "Admin rights set")
+    
+    else:
+        bot.reply_to(message, f"Admin rights could not be set ({status})")
+
+
 @bot.message_handler(commands=['me', 'Me']) # /me -> sending user info
 def send_user(message):  
         """ Send user data
@@ -152,12 +195,16 @@ def send_user(message):
         :rtype: none
         """
         user_id = int(message.from_user.id)
-        user_data = api_handler.get_user(user_id) # tbd: formatting
-        if not user_data or user_data == None:
+        user_data = api_handler.get_user(user_id)
+        if not user_data or user_data == None: # true if user is not registered
             bot.reply_to(message, "This didn\'t work. Make sure to connect your telegram id (/id) on https://gruppe1.testsites.info")
             return
-
-        bot.reply_to(message, 'Your user data:\n' + str(user_data))
+        username = user_data['username']
+        email = user_data['email']
+        user_id = user_data['telegram_user_id']
+        cron = user_data['cron']
+        admin = user_data['admin']
+        bot.reply_to(message, f'Username: {username}\nEmail: {email}\nID: {user_id}\nCron: {cron}\nAdmin: {admin}') # format user data into readable message text
 
 
 @bot.message_handler(commands=['id', 'auth', 'Id', 'Auth']) # /auth or /id -> Authentication with user_id over web tool
@@ -175,7 +222,7 @@ def send_id(message):
     bot.reply_to(message, answer)
 
 
-#function that sends telegram status(running or offline) as message from telegram bot to user
+#function that can be used to ensure that the bot is online and running
 @bot.message_handler(commands=['status', 'Status'])
 def send_status(message):
 
@@ -272,28 +319,26 @@ def send_all_news(message):
     """
     
     user_id = int(message.from_user.id)
-    keywords = api_handler.get_user_keywords(user_id)
+    keywords = api_handler.get_user_keywords(user_id) # get keywords of user
 
-    if keywords == None:
+    if keywords == None: # true if user is not registered
         bot.send_message(chat_id=user_id, text='This didn\'t work. Make sure to connect your telegram id (/id) on https://gruppe1.testsites.info')
         return
     
-    if not keywords:
+    if not keywords: # true if user is registered but does not have any keywords
         bot.send_message(chat_id=user_id, text='You have no keywords. Please add some keywords with /news')
         return
 
-    keywords_search = ' OR '.join(keywords)
-    print(keywords_search)
-    now = dt.datetime.now().date()
-    from_date = now - dt.timedelta(days=7)
+    keywords_search = ' OR '.join(keywords) # concat all keywords with OR -> NewsAPI can understand OR, AND, NOT etc.
+    now = dt.datetime.now().date() # get current date
+    from_date = now - dt.timedelta(days=7) # get date 7 days ago -> limit age of news to 7 days old max
     from_date_formatted = dt.datetime.strftime(from_date, '%Y-%m-%d')
-    print(from_date_formatted)
-    news_list = news.get_all_news_by_keyword(keywords_search, from_date_formatted)["articles"]
+    news_list = news.get_all_news_by_keyword(keywords_search, from_date_formatted)["articles"] # array of JSON article objects
 
-    if news_list:
+    if news_list: # true if news_list is not empty
         for article in news_list:
             formatted_article = news.format_article(article)
-            bot.send_message(chat_id=user_id, text=formatted_article, parse_mode="MARKDOWN")
+            bot.send_message(chat_id=user_id, text=formatted_article, parse_mode="MARKDOWN") # Markdown allows to write bold text with * etc.
     else:
         bot.send_message(chat_id=user_id, text='No news found for your keywords.')
     
@@ -310,28 +355,28 @@ def send_news(message):
     :rtype: none
     """
     user_id = int(message.from_user.id)
-    keywords = api_handler.get_user_keywords(user_id)
+    keywords = api_handler.get_user_keywords(user_id) # get keywords of user
 
-    if keywords == None:
+    if keywords == None: # true if user is not registered
         bot.send_message(chat_id=user_id, text='This didn\'t work. Make sure to connect your telegram id (/id) on https://gruppe1.testsites.info')
         return
     
-    if not keywords:
+    if not keywords: # true if user is registered but does not have any keywords
         bot.send_message(chat_id=user_id, text='You have no keywords. Please add some keywords with /addkeyword')
         return
 
     if keywords:
         for keyword in keywords:
             top_news = news.get_top_news_by_keyword(keyword)["articles"]
-            if top_news == None:
+            if top_news == None: # true if request to NewsAPI failed
                 bot.send_message(chat_id=user_id, text='News Server did not respond correctly. Try again later.')
-                return
-            if not top_news:
-                bot.send_message(chat_id=user_id, text=f'No news found for keyword: *{keyword}*', parse_mode="MARKDOWN")
-                return
 
-            formatted_article = news.format_article(top_news[0])
-            bot.send_message(chat_id=user_id, text=f"_keyword: {keyword}_\n\n" + formatted_article, parse_mode="MARKDOWN")
+            if not top_news: # true if no news found for keyword (empty list)
+                bot.send_message(chat_id=user_id, text=f'No news found for keyword: *{keyword}*', parse_mode="MARKDOWN")
+
+            else:
+                formatted_article = news.format_article(top_news[0]) # only format and send most popular news
+                bot.send_message(chat_id=user_id, text=f"_keyword: {keyword}_\n\n" + formatted_article, parse_mode="MARKDOWN")
 
 
 @bot.message_handler(commands=['addkeyword', 'Addkeyword']) # /addkeyword -> add keyword to user
@@ -346,15 +391,14 @@ def add_keyword(message):
     """
     user_id = int(message.from_user.id)
     bot.send_message(chat_id=user_id, text='Type keyword to add:')
-    bot.register_next_step_handler(message, store_keyword)
+    bot.register_next_step_handler(message, store_keyword) # wait for user to send keyword, then call store_keyword function
     
 def store_keyword(message):
     user_id = int(message.from_user.id)
-    print(str(user_id))
-    keyword = str(message.text).lower()
-    status = api_handler.set_keyword(user_id, keyword)
-    if status == 200:
-        bot.send_message(chat_id=user_id, text=f'Keyword "{keyword}" added.')
+    keyword = str(message.text).lower() # lower to ensure Bitcoin and bitcoin is not stored as individual keywords
+    status = api_handler.set_keyword(user_id, keyword) # set keyword in database
+    if status == 200: # statuscode 200 means keyword was added successfully without errors
+        bot.send_message(chat_id=user_id, text=f'Keyword "{keyword}" added.') # duplicate keywords are denied by Database, so no need to check for that here
     else:
         bot.send_message(chat_id=user_id, text=f'Keyword "{keyword}" could not be stored. Make sure to connect your telegram id (/id) on https://gruppe1.testsites.info (statuscode {status})')
 
@@ -371,14 +415,14 @@ def remove_keyword(message):
     """
     user_id = int(message.from_user.id)
     bot.send_message(chat_id=user_id, text='Type keyword to remove:')
-    bot.register_next_step_handler(message, remove_keyword_step)
+    bot.register_next_step_handler(message, remove_keyword_step) # wait for user to send keyword to remove, then call remove_keyword_step function
 
 def remove_keyword_step(message):
     user_id = int(message.from_user.id)
     keyword = str(message.text).lower()
     status = api_handler.delete_keyword(user_id, keyword)
-    if status == 200:
-        bot.send_message(chat_id=user_id, text=f'Keyword "{keyword}" removed.')
+    if status == 200: # statuscode 200 means keyword was removed successfully without errors
+        bot.send_message(chat_id=user_id, text=f'Keyword "{keyword}" removed.') # checking if keyword to remove is in database are handled in database, not here
     else:
         bot.send_message(chat_id=user_id, text=f'Failed deleting keyword "{keyword}". (statuscode {status})')
 
@@ -394,19 +438,19 @@ def send_keywords(message):
     :rtype: none
     """
     user_id = int(message.from_user.id)
-    keywords = api_handler.get_user_keywords(user_id)
-    if keywords == None:
+    keywords = api_handler.get_user_keywords(user_id) # get keywords of user
+    if keywords == None: # true if user is not registered
         bot.send_message(chat_id=user_id, text='This didn\'t work. Make sure to connect your telegram id (/id) on https://gruppe1.testsites.info')
         return
-    if not keywords:
+    if not keywords: # true if user is registered but does not have any keywords
         bot.send_message(chat_id=user_id, text='No keywords set for this account. Add keywords by using /addkeyword')
         return
-    else:
+    else: # send keyword list
         keywords_str = ', '.join(keywords)
         bot.send_message(chat_id=user_id, text=f'Your keywords are: _{keywords_str}_', parse_mode="MARKDOWN")
 
 
-@bot.message_handler(commands=['portfolio', 'Portfolio']) #tbd
+@bot.message_handler(commands=['portfolio', 'Portfolio'])
 def send_portfolio(message):
     """ Send portfolio of user
     :type message: message object bot
@@ -417,23 +461,23 @@ def send_portfolio(message):
     :rtype: none
     """
     user_id = int(message.from_user.id)
-    portfolio = api_handler.get_user_portfolio(user_id)
-    if portfolio == None:
+    portfolio = api_handler.get_user_portfolio(user_id) # get portfolio of user as json
+    if portfolio == None: # true if user is not registered
         bot.send_message(chat_id=user_id, text='This didn\'t work. Make sure to connect your telegram id (/id) on https://gruppe1.testsites.info')
         return
-    if not portfolio:
+    if not portfolio: # true if user is registered but does not have any stocks in portfolio
         bot.send_message(chat_id=user_id, text='You do not have any stocks in your portfolio.')
         return
-    else:
+    else: # send portfolio
         for stock in portfolio:
-            comment = str(stock["comment"])
-            count = "{:.2f}".format(float(stock["count"]))
+            comment = str(stock["comment"]) # comment may be written name of stock, comment is made by user when adding an stock to portfolio
+            count = "{:.2f}".format(float(stock["count"])) # round count to 2 decimal places
             isin = str(stock["isin"])
-            worth = "{:.2f}".format(float(stock["current_price"]) * float(stock["count"]))
-            bot.send_message(chat_id=user_id, text=f'*{comment}*\n_{isin}_\namount: {count}\nworth: ${worth}', parse_mode="MARKDOWN")
+            worth = "{:.2f}".format(float(stock["current_price"]) * float(stock["count"])) # round current_price to 2 decimal places
+            bot.send_message(chat_id=user_id, text=f'*{comment}*\n_{isin}_\namount: {count}\nworth: ${worth}', parse_mode="MARKDOWN") # formatted message in markdown
 
 
-@bot.message_handler(commands=['newtransaction', 'Newtransaction']) #tbd not working rn
+@bot.message_handler(commands=['newtransaction', 'Newtransaction']) #tbd not working rn may be deleted in future
 def set_new_transaction(message):
     """ Set new transaction for user
     :type message: message object bot
@@ -470,7 +514,7 @@ def set_new_transaction_step(message):
         bot.send_message(chat_id=user_id, text=f'Failed adding transaction. (statuscode {status})')
 
     
-@bot.message_handler(commands=['interval', 'Interval']) #tbd
+@bot.message_handler(commands=['interval', 'Interval'])
 def send_interval(message):
     """ send interval for user
     :type message: message object bot
@@ -481,20 +525,20 @@ def send_interval(message):
     :rtype: none
     """
     user_id = int(message.from_user.id)
-    user_data = api_handler.get_user(user_id)
-    if user_data == None:
+    user_data = api_handler.get_user(user_id) # get cron interval of user (stored in user data)
+    if user_data == None: # true if user is not registered in DB
         bot.send_message(chat_id=user_id, text='This didn\'t work. Make sure to connect your telegram id (/id) on https://gruppe1.testsites.info and set an interval with /setinterval')
         return
-    else:
-        interval = str(user_data['cron'])
-        if interval == 'None':
+    else: # send interval
+        interval = str(user_data['cron']) # get cron from user data
+        if interval == 'None': # true if user has no cron set
             bot.send_message(chat_id=user_id, text='You do not have an interval set. Set one with /setinterval')
             return
-        formatted_interval = str(interval).replace(' ', '_')
+        formatted_interval = str(interval).replace(' ', '_') # replace spaces with underscores to add to url of crontab.guru
         bot.send_message(chat_id=user_id, text=f'Your update interval: {interval} (https://crontab.guru/#{formatted_interval})')
     
 
-@bot.message_handler(commands=['setinterval', 'Setinterval']) #tbd
+@bot.message_handler(commands=['setinterval', 'Setinterval'])
 def set_new_interval(message):
     """ Set new interval for user
     :type message: message object bot
@@ -506,19 +550,19 @@ def set_new_interval(message):
     """
     user_id = int(message.from_user.id)
     bot.send_message(chat_id=user_id, text='Type interval in cron format:\n(https://crontab.guru/)')
-    bot.register_next_step_handler(message, set_new_interval_step)
+    bot.register_next_step_handler(message, set_new_interval_step) # executes function when user sends message
 
 def set_new_interval_step(message):
 
     user_id = int(message.from_user.id)
     interval = str(message.text)
-    status = api_handler.set_cron_interval(user_id, interval)
+    status = api_handler.set_cron_interval(user_id, interval) # send cron to db
 
     if status == 200:
         bot.send_message(chat_id=user_id, text='Interval succesfully set.')
         return
     
-    if status == -1: # only -1 when interval is invalid
+    if status == -1: # only -1 when interval is invalid, not a real statuscode, but used from api_handler.set_cron_interval to tell the crontab has the wrong format
         bot.send_message(chat_id=user_id, text='Invalid interval format. Try again with\n /setinterval.')
         return
     else:
diff --git a/telegram_bot/bot_scheduler.py b/telegram_bot/bot_scheduler.py
deleted file mode 100644
index 8fcef6f..0000000
--- a/telegram_bot/bot_scheduler.py
+++ /dev/null
@@ -1,37 +0,0 @@
-"""
-script for regularly sending updates on shares and news based on user interval
-"""
-__author__ = "Florian Kellermann, Linus Eickhoff"
-__date__ = "05.04.2022"
-__version__ = "0.0.1" 
-__license__ = "None"
-
-import shares.share_fetcher as share_fetcher
-import news.news_fetcher as news_fetcher
-
-import datetime
-import sys
-from apscheduler.schedulers.blocking import BlockingScheduler
-
-'''
-* * * * * code
-┬ ┬ ┬ ┬ ┬
-│ │ │ │ │
-│ │ │ │ └──── weekday (0->Monday, 7->Sunday)
-│ │ │ └────── Month (1-12)
-│ │ └──────── Day (1-31)
-│ └────────── Hour (0-23)
-└──────────── Minute (0-59)
-
-example 0 8 * * * -> daily update at 8am
-'''
-
-def user_updates():
-    """sends timed updates automatically to user
-
-    Args:
-        
-    Returns:
-    
-    """
-    return
\ No newline at end of file
diff --git a/telegram_bot/bot_updates.py b/telegram_bot/bot_updates.py
index 6269b5e..2638dec 100644
--- a/telegram_bot/bot_updates.py
+++ b/telegram_bot/bot_updates.py
@@ -8,14 +8,18 @@ __license__ = "None"
 
 from calendar import month
 from symtable import Symbol
+from dotenv import load_dotenv
 from shares.share_fetcher import get_share_price
+import news.news_fetcher as news_fetcher
 import time
 import datetime
+import os
 from bot import bot
 import sys
 from multiprocessing import Process
 from apscheduler.schedulers.background import BackgroundScheduler
 from api_handling.api_handler import API_Handler
+from news.news_fetcher import format_article
 
 
 '''
@@ -33,24 +37,21 @@ example 0 8 * * * -> daily update at 8am
 user_ids = []
 user_crontab = []
 
-def main_loop():
-    """ main loop for regularly sending updates
+load_dotenv(dotenv_path='.env')
+
+def start_updater():
+    """ starting function for regularly sending updates
     :raises: none
 
     :rtype: none
     """
     
-    current_time_datetime = datetime.datetime.now()
-    my_handler = API_Handler("https://gruppe1.testsites.info/api", "bot@example.com", "bot")
+    my_handler = API_Handler("https://gruppe1.testsites.info/api", str(os.getenv("BOT_EMAIL")), str(os.getenv("BOT_PASSWORD")))
+    
+    update_crontab(my_handler)
     
     
-    # update_for_user(5270256395, my_handler) # Debug (running test update for kevins shares)
-    
-    
-    update_crontab(current_time_datetime, my_handler)
-    
-    
-def update_crontab(pCurrent_Time, p_my_handler):
+def update_crontab(p_my_handler):
     """ Updating crontab lists every hour
     :type pCurrent_Time: time when starting crontab update
     :param pCurrent_Time: datetime
@@ -63,8 +64,6 @@ def update_crontab(pCurrent_Time, p_my_handler):
     global user_crontab
     global user_ids
     
-    #p_my_handler.set_cron_interval(user_id = 1770205310, cron_interval = "23 08 * * *")
-    
     all_users = p_my_handler.get_all_users()
     
     user_ids = []
@@ -75,11 +74,9 @@ def update_crontab(pCurrent_Time, p_my_handler):
             user_ids.append(int(element["telegram_user_id"]))
             user_crontab.append(str(element["cron"]))
     
-    print(user_ids)
-    
     update_based_on_crontab(user_ids, user_crontab, p_my_handler)
     
-    update_crontab(datetime.datetime.now(), p_my_handler)
+    update_crontab(p_my_handler)
     
     
 def update_based_on_crontab(p_user_ids, p_user_crontab, p_my_handler):
@@ -101,11 +98,8 @@ def update_based_on_crontab(p_user_ids, p_user_crontab, p_my_handler):
     
     my_scheduler = BackgroundScheduler()
     
-    print(len(user_ids)) #Debug
-    
     for i in range(len(p_user_ids)):
         cron_split = p_user_crontab[i].split(" ")
-        print(cron_split[4], cron_split[1], cron_split[0], cron_split[3], cron_split[2])
         my_scheduler.add_job(update_for_user, 'cron', day_of_week = cron_split[4] , hour= cron_split[1] , minute = cron_split[0], month= cron_split[3] , day=cron_split[2], args=(p_user_ids[i], p_my_handler ))
     
     my_scheduler.start()
@@ -140,7 +134,7 @@ def update_for_user(p_user_id, p_my_handler):
             share_courses.append(element["current_price"])
 
     my_user = p_my_handler.get_user(p_user_id)
-    send_to_user("Hello %s this is your share update:"%str(my_user["username"]), pUser_id=p_user_id)
+    send_to_user("Hello %s this is your share update for today:"%str(my_user["username"]), pUser_id=p_user_id)
     
     if len(share_symbols) != 0:
         for i in range(len(share_symbols)):
@@ -148,9 +142,19 @@ def update_for_user(p_user_id, p_my_handler):
             send_to_user(my_update_message, pUser_id=p_user_id)
     else:
         send_to_user("No shares found for your account. Check https://gruppe1.testsites.info/api to change your settings and add shares.", pUser_id=p_user_id)
+
+    keywords = p_my_handler.get_user_keywords(p_user_id) # get keywords as array
+
+    if(keywords): # if keywords exist and array is not empty
+        send_to_user("If you haven't read yet: \nHere are some interesting news according to your keywords:", pUser_id=p_user_id)
+        for keyword in keywords:
+            news = news_fetcher.get_top_news_by_keyword(keyword)["articles"][0] # only use the most popular news
+            news_formatted = news_fetcher.format_article(news) # format for message
+            send_to_user(f"_keyword: {keyword}_\n\n{news_formatted}", pUser_id=p_user_id, md_mode=True) # send news with related keyword in Markdown
+
          
     
-def send_to_user(pText, pUser_id = 1770205310):
+def send_to_user(pText, pUser_id , md_mode = False):
     
     """ Send message to user
     :type pText: string
@@ -159,18 +163,23 @@ def send_to_user(pText, pUser_id = 1770205310):
     :type pUser_id: int
     :param pUser_id: user to send to. per default me (Florian Kellermann)
 
+    :type md_mode: boolean
+    :param md_mode: if true, parse_mode is markdown
+
     :raises: none
 
     :rtype: none
     """
-    bot.send_message(chat_id=pUser_id, text=pText)
+    if md_mode:
+        bot.send_message(chat_id=pUser_id, text=pText, parse_mode="MARKDOWN")
+    else:
+        bot.send_message(chat_id=pUser_id, text=pText)
+
 
 
 if __name__ == "__main__":
-    
-    print('bot_updates.py starting.')
     try:
-        main_loop()
+        start_updater()
         sys.exit(-1)
     except KeyboardInterrupt:
         print("Ending")
diff --git a/telegram_bot/news/news_fetcher.py b/telegram_bot/news/news_fetcher.py
index 96f50ff..a6dad7e 100644
--- a/telegram_bot/news/news_fetcher.py
+++ b/telegram_bot/news/news_fetcher.py
@@ -15,12 +15,13 @@ import datetime as dt
 from newsapi import NewsApiClient
 from dotenv import load_dotenv
 
-load_dotenv()
+load_dotenv() # loads environment vars
 
 # Init
-api_key = os.getenv('NEWS_API_KEY')
-newsapi = NewsApiClient(api_key=api_key)
+api_key = os.getenv('NEWS_API_KEY') # get API Key from .env file
+newsapi = NewsApiClient(api_key=api_key) # news api from https://newsapi.org/
 try:
+    # get all available news sources (e.g BBC, New York Times, etc.)
     source_json = requests.get(f"https://newsapi.org/v2/top-headlines/sources?apiKey={api_key}&language=en").json()
     sources = source_json["sources"]
     str_sources = ",".join([source["id"] for source in sources])
@@ -38,7 +39,7 @@ def get_all_news_by_keyword(keyword, from_date="2000-01-01"):
     Returns:
         JSON/dict: dict containing articles
     """
-    top_headlines = newsapi.get_everything(q=keyword, sources=str_sources, language='en', from_param=from_date)
+    top_headlines = newsapi.get_everything(q=keyword, sources=str_sources, language='en', from_param=from_date) # keywords can be combined with OR (e.g. keyword = "bitcoin OR ethereum")
     if(top_headlines["status"] == "ok"):
         return top_headlines
     else:
@@ -53,7 +54,7 @@ def get_top_news_by_keyword(keyword):
     Returns:
         JSON/dict: dict containing articles
     """
-    top_headlines = newsapi.get_top_headlines(q=keyword, sources=str_sources, language='en')
+    top_headlines = newsapi.get_top_headlines(q=keyword, sources=str_sources, language='en') # get top headlines, measured by popularity from NewsApi
     if(top_headlines["status"] == "ok"):
         return top_headlines
     else:
@@ -72,11 +73,11 @@ def format_article(article):
     sourcename = article["source"]["name"]
     headline = article["title"]
     url = article["url"]
-    formatted_article = f"_{sourcename}_\n*{headline}*\n\n{url}"
+    formatted_article = f"_{sourcename}_\n*{headline}*\n\n{url}" # formatting in Markdown syntax
 
     return formatted_article
 
-if __name__ == '__main__':
+if __name__ == '__main__': # only execute if script is called directly -> for simple testing
 
     print("this is a module and should not be run directly")
     print("fetching top news by keyword bitcoin...")
@@ -84,4 +85,7 @@ if __name__ == '__main__':
     articles = get_all_news_by_keyword("bitcoin")
     formatted_article = format_article(articles["articles"][0])
     print(formatted_article)
+    articles = get_top_news_by_keyword("bitcoin")
+    formatted_article = format_article(articles["articles"][0])
+    print(formatted_article)
     sys.exit(1)
\ No newline at end of file