I wanna learn how to do punk rock singing/screaming?

first off, to sing "punk", you do not have to be a good singer at all...you just have to hit the notes every now and then, and to scream properly, you do not want to scream from your throat...you have to try singing with support from your diaphragm...and then start using your glottals...ha this is kind of hard to explain via the internet...check out a DVD called The Zen of Screaming, that could help you a lot