Hey kid,
you should occupy yourself till you get to a sufficient age and bankroll size. read, read, read. practice. practice, practice. There are some famous "gamblers" who claim that they started gambling in their early teens. I don't know if that refers to gambling with their life, or small time between friends, or illegally at underground joints. But do get something going on. Plug for qfit.com, he makes great sim software if you want to buy it. Or,.... I don't know what features are taken out for the demo version. There's also a free trainer on the left side. Again, just explore this site and the many other free ones out there. Or gamble for small stakes between you and your friends.
PS. take that $90 excuse for a bankroll and buy books or software. don't play at the casino with it, unless you want to lose it, guaranteed.