The things everyone said here are very good bits of advice, hope you listen to it. I have numerous kids who "hang out" in the shop from time to time just to help out a bit. By the time I was 14, I was almost a permanent fixture in a coulple different garages around town, sweeping floors, washing parts, and soaking up the knowledge. I had to earn their trust and learn from them, eventually I got to do some of the "real" work and the learning really started. Hang out with the car guys, and don't hesitate to throw in some time in exchange for the learning experience.