How do fill income tax return?

I have filled form 16 for income tax return. but still i have not been paid that amount. How to re-get that amount, do i need to submit any other form other than form16? I have changed my address also. how to change this? How long it ll take to get the amount?
I have filed last year itself, but still do not know the process the process details, if they return the money, in which way it which reach me?