What are the rules of roller derby?☼☼ I just need ta no☼☼?

I reallsy wanna do it... but im 11, so i know i need 2 wait, and hey, i no that nits dangerous and whatnot but whatever... i mean, i had 70 lbs dropped on my foot so if i got pushed down i wouldnt caree! someone twice my weight and size knocked me down in pe, so i hav a big-ol black bruise on my knee... anyways, i just wanna no the rulz and stuffffff...... and they hav the rulz on wiki, but i mean, hoo would wanna reed for like 4 pages on rulz??????!!!!!! soooooooo, can sum1 telllll miiii??? plzzzzzzz?? ♂◙♀♪☺☻♥♪☼☺