Hey, I'm 16, and I've been screaming roughly a month or two less than a year, and I want to know, how do I get the aggression, anger, and raw power into my growls and screams? I've bought the DVD The Zen Of Screaming, and should I get the second? I've also been looking up tips on Youtube, and found a few good videos. Also I want to learn some tips for singing.

Could anyone please help me??