[Murilo Specht]

Dude,
I don't mind helping people who need it but please try to find the answers to your questions yourself before asking someone to take the time to be your personal librarian.Some may say that you are becoming a pest.

rzwan, I'm sorry to tell you this, but you will never become anything in life if you can't learn things by yourself, you are being a parasite trying to use others, how the hell will you learn to use a bank account? How will you learn to pay the taxes when you start working?

Try learning by yourself, trial and error, and also, there's google out there, that is really useful.