diff --git a/chatmaths.py b/chatmaths.py
new file mode 100644
index 0000000..f0df289
--- /dev/null
+++ b/chatmaths.py
@@ -0,0 +1,124 @@
+from word2number.w2n import word_to_num
+import re
+import inflect
+
+""" recevies the full sentence and change it in order to be compatible with the following operations. Calls others functions depeding on the operations needed."""
+def entre(sentence):
+    acum = []
+    num = 0
+    if "plus" in sentence:
+        sentence = sentence.replace("plus", "+")
+    if "minus" in sentence:
+        sentence = sentence.replace("minus", "-")
+    if "times" in sentence:
+        sentence = sentence.replace("times", "*")
+    if "divided by" in sentence:
+        sentence = sentence.replace("divided by", "/")
+    if "power" in sentence:
+        sentence = sentence.replace("power", "^")
+    if "powers" in sentence:
+        sentence = sentence.replace("powers", "^")
+    if "what is " in sentence:
+        sentence = sentence.replace("what is ", "")
+    if "what" in sentence:
+        sentence = sentence.replace("what", "")
+    if "is" in sentence:
+        sentence = sentence.replace("is", "")
+    word = ""
+    final = ""
+    for k in sentence:          #loop to check if there are any letters left in the sentence
+        cnf = (bool(re.match('[a-zA-Z]', k)))           #returns True or False if letters in sentence
+        if cnf:
+            break
+    try:
+        if cnf:             #if returned True, may be numbers in full english, change them to numbers
+            for i in sentence:          #checks every indexex of the string to make the necessary treatment
+                if i in "+" or i in "-" or i in "*" or i in "/" or i in "^":            #if this indexex has the value of an operation, the number must be completed
+                    word = word_to_num(word)                #if number is in english, becames a number
+                    final += str(word)              #add the number to the final string
+                    final += i          #add the operation to the final string
+                    word = ""
+                    continue
+                if i in " ":
+                    continue
+                else:
+                    word += i           #keeps adding the letter/number to have the full word or full number wanted
+
+            word = word_to_num(word)        #adds the final number to the final string (initial string ended so it is needed to add again since it was not added before
+            final += str(word)
+            sentence = final            #finally the initial string, having numbers in it in english, becames only numbers.
+    except:
+        print("Only full english or just numbers!")
+
+    if " " in sentence:
+        sentence = sentence.replace(" ", "")
+    try:
+        for i in sentence:          #loop to insert full numbers into a list
+            if i in "+" or i in "-" or i in "*" or i in "/" or i in "^":
+                acum.append(num)            #appends the number wanted to the list
+                acum.append(i)          #appends the operation wanted to the list
+                num = 0
+                continue
+            else:
+                num = num * 10          #if the indexex is still a number, the previous numbers are multiplied by 10 -> example: if num was 3, now is 30
+                num = num + float(i)            #now, add the number in the indexex -> example: if the number in this indexex is 2, now the full number is 32
+
+        acum.append(num)            #adds the final number wanted to the list one last time
+        acum = mults(acum, 0)
+        acum = sums(acum, 0)
+        if cnf:         #if there was letters in the initial sentence
+            p = inflect.engine()
+            acum = p.number_to_words(acum[0])           #the final result becames in full english
+            if "point zero" in acum:
+                acum = acum.replace("point zero", "")
+            print("Easy, the answer is ", acum)
+        else:           #if not, prints the final result
+            print("Easy, the answer is ", acum[0])
+    except:
+        print("Try again")
+
+""" checks if there is any multiplication/division/power to do because they have priority. 
+    if so the operation is done  -   gets as parameters the list acum and the indexex number - returns the result of this operations"""
+def mults(acum, index):
+    if index < len(acum):         
+        if acum[index] == "*":
+            tot = float(acum[index - 1]) * float(acum[index + 1])
+            working(tot,acum, index, "mult")
+        elif acum[index] == "^":
+            tot = float(acum[index - 1]) ** float(acum[index + 1])
+            working(tot,acum, index, "mult")
+        elif acum[index] == "/":
+            tot = float(acum[index - 1]) / float(acum[index + 1])
+            working(tot,acum, index, "mult")
+        else:
+            mults(acum, index + 1)            #if index is a number, using recursion we call the function again with to check the following indexex
+    return acum
+
+""" checks if there is any sums/subtractions to do. 
+    if so the operation is done  -   gets as parameters the list acum and the indexex number - returns the final result"""
+def sums(acum, index):
+    if index < len(acum):
+        if acum[index] == "+":
+            tot = float(acum[index - 1]) + float(acum[index + 1])
+            working(tot,acum, index, "sum")
+        elif acum[index] == "-":
+            tot = float(acum[index - 1]) - float(acum[index + 1])
+            working(tot,acum, index, "sum")
+        else:
+            sums(acum, index + 1)
+    return acum
+
+
+
+def working(tot, acum,index,type):
+    if "sum" in type:
+        acum[index - 1] = tot  # replaces the indexex before with the result of the operation
+        acum.remove(acum[index + 1])  # removes the other indexexes involved in the operation
+        acum.remove(acum[index])  # "" ""
+        sums(acum, index)  # calls the function again, with the same indexex since we removed two indexexes from the list
+    else:
+        acum[index - 1] = tot  # replaces the indexex before with the result of the operation
+        acum.remove(acum[index + 1])  # removes the other indexexes involved in the operation
+        acum.remove(acum[index])  # "" ""
+        mults(acum, index)  # calls the function again, with the same indexex since we removed two indexexes from the list
+
diff --git a/confirmDB.py b/confirmDB.py
new file mode 100644
index 0000000..75b8de3
--- /dev/null
+++ b/confirmDB.py
@@ -0,0 +1,19 @@
+import pymysql          #allows connection to databases with sql
+
+
+"""Connect to the database"""
+def connection():
+    connect = pymysql.connect(host="localhost",
+                         user="root",
+                         passwd="",
+                         database="users")
+    return connect
+
+
+
+
+
+
+
+
+
diff --git a/info.py b/info.py
new file mode 100644
index 0000000..84bde20
--- /dev/null
+++ b/info.py
@@ -0,0 +1,57 @@
+import random       #this package allows to choose randomly an index of a list
+from confirmDB import connection
+from Setup import load_setting
+
+
+""" prints a random answer to question about favourite things """
+def informations(sentence):
+    answer = ["I don't want to share this with you", "If i tell you I would have to kill you", "I just don't know yet",
+              "Good question!"]
+    final = random.choice(answer)
+    print(final)
+    ownInfo(sentence)
+
+
+""" gets information about favourites of the user"""
+def ownInfo(sentence):
+    sep = 'favourite '
+    info = sentence.split(sep, 1)[0]    #gets the words before the word "favourite" in a sentence to isolate "favourite" and the key word
+    info = info + sep           #adds the word "favourite" to the already filtered sentence
+    info = sentence.replace(info, "")           #gets the key word by removing all the words previous to "favourite" and "favourite" included
+    info = info.replace(" ", "")
+    nick = load_setting(0)          #get the nick of current user
+    nick = nick.lower()
+    nick = nick[:-1]
+    """--------------------------------------------"""
+    try:
+        connect = connection()       # gets the details to the database
+        cursor = connect.cursor()       # establish a cursor to fetch the results wanted from the databse
+        sql = 'SELECT ' + info + ' FROM favourite WHERE NICKNAME = "' + nick + '"'  #sql gets the order to select all info  from the table favourite in the current user row
+        cursor.execute(sql)         # order to select executed
+        myresult = cursor.fetchall()  # gets all the rows of nicknames where the nickname == nick
+        l = str(myresult[0])  # l =    ('favourite food',)  / (None,)
+        if "None" in l:
+            final = (l[1:])
+            final = final[:-2]
+        else:
+            final = (l[2:])
+            final = final[:-3]
+        if final == "None":
+            getInfo(nick, info)
+        else:
+            print("Your favourite ", info.lower() , " is ", final)
+    except:
+        getInfo(nick, info)
+
+
+""" "add" new values to table favourite """
+def getInfo(nick, info):
+    print("I don't know yours, what is it? ")
+    ans = input("")
+    connect = connection()       # gets the details to the database
+    cursor = connect.cursor()        # establish a cursor to fetch the results wanted from the databse
+    sql = 'UPDATE favourite SET '+info+'="'+ans+'" WHERE NICKNAME="'+ nick + '"'        #sql gets the order to update all info from the table favourite in the current user row
+    cursor.execute(sql)             # order to select executed
+    connect.commit()          # tell the database to save all the changes
+    print("Ok, I will try not to forget!")
+
diff --git a/play.py b/play.py
new file mode 100644
index 0000000..cee4bcd
--- /dev/null
+++ b/play.py
@@ -0,0 +1,72 @@
+import webbrowser   #
+import glob         #allows to have a list
+import os           #provides a portable way of using operating system functionalities
+import random       #allows to choose randomly an index of a list
+
+
+def play(sentence):
+    mlist = (glob.glob("music/*.mp3"))          #gets all the names of the musics inside the folder music, in the same directory as the python files
+    if "show" in sentence or "list" in sentence:
+        if "my" not in sentence:
+            if "all" in sentence:
+                filt = sentence
+                if "show" in sentence:
+                    if "all" in sentence:
+                        filt = filt.replace("show all music of ", "")           #filters sentence to get the name to identify the music
+                else:
+                    if "all" in sentence:
+                        filt = filt.replace("list all music of ", "")           #filters sentence to get the name to identify the music
+            filt = filt.lower()
+            print("All music of :", filt.upper() ," \n")
+            attp = 0
+            for i in mlist:
+                top = i.lower()
+                i = i[6:]           #filter the value in order to get only the name of the music/artist
+                if filt in top:
+                    print(i)        #prints the songs with the name user wanted
+                    attp = 1
+                if attp < 1:
+                    print("You have no songs with that name")
+        else:
+            print("Your music: \n")
+            for i in mlist:
+                i = i[6:]           #filter the value in order to get only the name of the music/artist
+                print(i)            #prints the song
+
+
+    elif "random" in sentence or "shuffle" in sentence:
+        shuffle = random.choice(mlist)          #chooses one random song
+        os.startfile(shuffle)                   #execute the song with that name
+        shuffle = shuffle[6:]                   #filters the name of the song to print only the name of the song and artist
+        print("Playing ", shuffle)
+    else:
+        if "play " in sentence:
+            counter = 0
+            newS = sentence.replace("play ", "")        #gets the name of the song
+            for i in mlist:
+                top = i.lower()
+                newS = newS.lower()
+                if newS in top:             #if finds the name of the song wanted
+                    print("Playing ", i[6:])
+                    os.startfile(i)         #plays the music qanted
+                    break
+                else:
+                    if counter < (len(mlist)-1):        #allows to continue searching while there are still musics to search
+                        counter += 1
+                        continue
+                    else:                   #if doesn't find the song wanted in the list:
+                        uOpen(sentence)
+                        break
+
+
+def uOpen(sentence):
+        sentence = sentence[5:]     #sentence is sentence after play
+        print("Playing " + sentence)
+        url = "https://www.youtube.com/results?search_query=" + sentence
+        webbrowser.open(url)       #opens google with that url
+
+def uGoogle(sentence):
+    sentence = sentence[5:]         #sentence is sentence after open
+    print("Opening " + sentence)
+    url = "https://www." + sentence
+    webbrowser.open(url)  # opens google with that url
diff --git a/send_email.py b/send_email.py
new file mode 100644
index 0000000..b9add1e
--- /dev/null
+++ b/send_email.py
@@ -0,0 +1,31 @@
+import smtplib          # implements the SMTP protocol to be able to send emails
+
+""" sends an email to new users with the details of the account 
+    https://www.geeksforgeeks.org/send-mail-gmail-account-using-python/
+"""
+def email(nick, password, mail):
+    try:
+        server = smtplib.SMTP('smtp.gmail.com', 587)        #declaration of gmail SMTP server settings
+        server.starttls()               #For security, this start the SMTP connection in the Transport Layer Security mode that encrypts all the SMTP commands
+        server.login("theforeignersgroup@gmail.com", "wearethebest101")         #information of the account which will send the email
+        msg = "Thank you for joining our CHATBOT!\nDont lose these email.\nYour account details to access our " \
+              "chatbot:\nLogin Username: " + nick + "\nPassword: " + password
+        server.sendmail("theforeignersgroup@gmail.com", mail, msg)
+        server.quit()           #closes the SMTP session
+    except:
+        print("Something went wrong. Probably your wiki connection it is not the best for this service")
+
+
+""" Allows the user to send emails to everyone he wants, using our email"""
+def create_email():
+    try:
+        server = smtplib.SMTP('smtp.gmail.com', 587)        #declaration of gmail SMTP server settings
+        server.starttls()               #For security, this start the SMTP connection in the Transport Layer Security mode that encrypts all the SMTP commands
+        mail = input("Email: ")
+        server.login("theforeignersgroup@gmail.com", "wearethebest101")         #information of the account which will send the email
+        msg = input("Message: ")
+        server.sendmail("theforeignersgroup@gmail.com", mail, msg)
+        server.quit()           #closes the SMTP session
+        print("Done! What can I help you now?")
+    except:
+        print("Something went wrong. Probably your wiki connection it is not the best for this service")
diff --git a/thanks.py b/thanks.py
new file mode 100644
index 0000000..cd33c1e
--- /dev/null
+++ b/thanks.py
@@ -0,0 +1,8 @@
+import random       #this package allows to choose randomly an index of a list
+
+
+""" prints random answers to compliments """
+def thanks():
+    answer = ["Thank you! :)", "I know, I know..", "I have never heard that before, thank you!",
+              "Probably you are right :)", "I don't care about what you think."]
+    print(random.choice(answer))
diff --git a/users.py b/users.py
new file mode 100644
index 0000000..9fef27f
--- /dev/null
+++ b/users.py
@@ -0,0 +1,95 @@
+from confirmDB import connection
+from send_email import email
+
+"""checks if there is any registered user with that nickname"""
+def checkUnique(nick):
+    try:
+        exist = False
+        connect = connection()       # gets the details to the database
+        cursor = connect.cursor()       # establish a cursor to fetch the results wanted from the databse
+        nick = nick.lower()
+        sql = 'SELECT NICKNAME FROM users WHERE NICKNAME = "' + nick + '"'      #sql gets the order to select all nicknames from the table users with the nickname == nick
+        cursor.execute(sql)         # order to select executed
+        myresult = cursor.fetchall()  # gets all the rows of nicknames where the nickname == nick
+        for x in myresult:
+            if nick in x:           #check if there is already a nickname == nick
+                exist = True
+                break
+        if exist:
+            check = input("I already know one " + nick + ", is that you? ")
+            check = check.lower()
+            if check in ["yes", "y", "of course", "yap", "obviously", "indeed", "that is correct", "affirmative"]:
+                LOGIN(nick)
+                return True
+            else:
+                return False
+        else:
+            return False
+    except:
+        print("Sorry, seems that you are not connected to my databse.")
+        return "off"
+
+""" process to login the user"""
+def LOGIN(nick):
+    try:
+        password = input("Password: ")
+        ckpassword = userDetails(nick, "PASSWORD")
+        if password == ckpassword:
+            print("Logged in Successfully!")
+        else:
+            print("Failed to Login!")
+            LOGIN(nick)
+    except:
+        print("Sorry, seems that you are not connected to my databse.")
+
+"""gets all the info wanted in the table users"""
+def userDetails(nick, info):
+    try:
+        connect = connection()
+        cursor = connect.cursor()
+        sql = 'SELECT ' + info + ' FROM users WHERE NICKNAME = "' + nick + '"'          #sql selects the info wanted about the user with nickname==nick from the table user
+        cursor.execute(sql)         # order to select executed
+        myresult = cursor.fetchall()  # gets all the rows of nicknames where the nickname == nick
+        l = str(myresult[0])  # l =    ('nickname',)
+        final = (l[2:])
+        final = final[:-3]
+        return final
+    except:
+        pass
+
+""" Adds new friends, collectiong and storing the information needed """
+def newFriend():
+    try:
+        firstName = input("What is your first name? ")
+        lastName = input("What is your last name? ")
+        nickname = input("How should I treat you? ")
+        nickname = nickname.lower()
+        connect = connection()
+        cursor = connect.cursor()
+        sql = 'SELECT NICKNAME FROM users WHERE NICKNAME = "' + nickname + '"'      #sql gets the order to select all nicknames from the table users with the nickname == nick
+        cursor.execute(sql)  # order to select executed
+        myresult = cursor.fetchall()  # gets all the rows of nicknames where the nickname == nick
+        for x in myresult:
+            if nickname in x:
+                print("I already call that to a friend. Please start again with a diferent nickname.")
+                return False
+        age = input("How old are you? ")
+        city = input("Where do you live? ")
+        mail = input("What is your email? ")
+        password = input("Define your password: ")
+        sql = "INSERT INTO users (FIRST_NAME, LAST_NAME, AGE, CITY, PASSWORD, NICKNAME, EMAIL) VALUES (%s, %s, %s, %s, " \
+              "%s, %s, %s) "            #sql gets the order to insert all these values into the table users
+        val = (firstName, lastName, age, city, password, nickname, mail)
+        cursor.execute(sql, val)        #order executed
+        connect.commit()  # tell the database to save all the changes
+        sql = "INSERT INTO favourite (NICKNAME) VALUE (%s) "        #sql gets the order to add the user nickname into the table favourite
+        val = (nickname)
+        cursor.execute(sql, val)        #order executed
+        connect.commit()  # tell the database to save all the changes
+        print(cursor.rowcount, " more friend! That's great!\n\n")
+        email(nickname, password, mail)     #Works depending on the wifi connection / does not work with public wifi connections
+        return nickname
+    except:
+        print("Something went wrong")
+
+
diff --git a/what.py b/what.py
index 4dfe60a..b729efa 100644
--- a/what.py
+++ b/what.py
@@ -1,46 +1,25 @@
 import random
 from wiki import wikiSearch
-def sentence_what(ck):
-    operations = ["+", "plus", "-", "minus", "/", "devised", "divided", "*", "x", "times"]
+from chatmaths import entre
+from info import informations, ownInfo
+
+
+""" prepered answers to what questions """
+def sentence_what(sentence):
     """         Function to get ChatBot information related to WHAT questions            """
-    if "your" in ck:
-        #   name related questions
-        if "last name" in ck:
+    if "your" in sentence:
+        if "last name" in sentence:
             answer = ["My last name is Foreigners", "My last name is B", "My last name is C", "My last name is D"]
             print(random.choice(answer))
-        elif "middle name" in ck:
+        elif "middle name" in sentence:
             print("My middle names are Made By The")
-        elif "full name" in ck:
+        elif "full name" in sentence:
             print("My name is ChatBot Made By The Foreigners")
-        elif "name" in ck:
+        elif "name" in sentence:
             print("My name is ChatBot")
-        #   personal related questions
-        elif "favourite" in ck:
-            if "colour" in ck:
-                word = "colour"
-                answer = ["obviously red.", "red.", " for the 100 time, red! You have a memory of a fish."]
-                print("My favourite " + word + " is " + random.choice(answer))
-            elif "song" or "music" in ck:
-                if "type" or "kind" or "genre" in ck:
-                    answer = ["I love all of them", "I don't want to share this with you",
-                              "If i tell you I would have to kill you"]
-                    print(random.choice(answer))
-                else:
-                    answer = ["I don't listen to music very often, so I can't answer to that question.", "I just don't know yet", "Good question!"]
-                    print(random.choice(answer))
-            elif "food" in ck:
-                answer = ["I just can't eat.", "I don't even have a mouth, seems impossible to know.", "Good question! I would love to have a answer to that question."]
-                print(random.choice(answer))
-            elif "film" in ck:
-                if "type" or "kind" or "genre" in ck:
-                    answer = ["I love all of them", "I don't want to share this with you", "If i tell you I would have to kill you"]
-                    print(random.choice(answer))
-                else:
-                    answer = ["I love many films, I can't choose one.", "I don't want to share this with you", "If i tell you I would have to kill you"]
-                    print(random.choice(answer))
         else:
-            print("I am not sure if I understand what you mean.")
-    elif "plus" in ck or "+" in ck or "minus" in ck or "-" in ck or "*" in ck or "times" in ck or "x" in ck or "divided" in ck or "/" in ck:
-        detectFunction(ck)
+            informations(sentence)      #calls other answers about the chatbot
+    elif "my" in sentence:
+        ownInfo(sentence)       #calls other questions and answers about the user
     else:
-        wikiSearch(ck)
\ No newline at end of file
+        wikiSearch(sentence)        #if there are no "personal" questions, calls wikiSearch to search in wikipedia for meanings