Which itr to file for a self employeed professional

I am pretty new in this IT filing and stuff. After my college, I started doing freelancing in web development and doing it for last 1.5 year. I dont have any so called trade license. My clients transfer funds to me at my bank account. 

Now, I will like to know which ITR form shall I fill up like 1,2,3,4 ...7 ? That will match my profession, (I dont have any other incomes from other sources to declare).