Penny Stocks Pick

I am a 13 year old in New Mexico, i am interested in the stock market, i have been watching a penny stock that fluxuates between 1 cent and 3 cents. I was just wondering if there was an age limit for the stock market.

Please give me an answer with proof of where you got your answer.

I have done alot of research and i know what to do, all I need to know if there a law that wont let me buy and sell with the stock market in NEW MEXICO. =]

thanks a lot