High school football question?

Right now you're getting to the age where you should probably get a gym membership and try to lift weights. Make sure you start out slow, though. I would suggest some running 4 or 5 days a week too. It will come in handy when you guys are doing conditioning. Other than that, you'll just have to learn on the fly. Don't sweat it, there are plenty of guys that don't start playing until high school