What is deference between I'm vs I am Please help me

This website is better then Facebook I'm using this website some 4 or 5 days I have great experience Im very happy I learn some new world with this website and make some new friends. There are many people who help to learn English and some give correction to students I want to tell them thank you so much and God bless you all. I spent my 1 hour or some more time with this website . Read notes that come from world . This website give freedom to write people write their good or bad experiences which with them .thank for reading and give me my correction please.....

Today give my exam!!!! In this exam I make some new friends and today is my first subject exam and there is 7 subjects & now 6 subjects are remanding I wish I pass in all subjects . My day exam experience is very nice & a girl is seats next to me she is very cute and she is well behavior I talk with that girl . I Asked him for his name she's name is Ridhi .when exam has started she copied my hole answer sheet . Please give me my correction. Thank you for reading......

Hello Tomorrow is my exam Fucking exam is tomorrow man!! I hate this exam. Tomorrow is my final exams and in my school government established cctv cameras, police & special forces this is very hard for us students never cheat. Pleases give me my correction & thank you for reading.....

Tomorrow is my final exam.. Exam is an burden for me You imagine in this world exam is not existing then all students party all time . in India this exam is very important for us .