how do i training my pitbull to atck when i say so?

[luis v]

hi i have a cute pitbull terrier he is about 14 weeks old alredy and he is going to be in his first show when he is 6 months old e alredy knows some stuff like stop, sit, drop, come, ( but still working in house training) but this is a pitbull show ( is nothign but i read about it before get in to it) and 1 of the things they do is traing the dog to atck when they say so ( just for self defence or for help to the police) and i was wondering if u have a website or a tip that i can traning my dog like that? thanks for ur help
well i was wondering the same thing seem when dumb asses like u knows how to write

[My name here]

If you are not a professional handler DO NOT try to teach your dog how to attack. If your dogs are not kenneled except when working or patrolling they could make a mistake that could cost you everything you own and your dog his life.