How to get Pecs? Help!?

Alright, i'm 13 and need to get more muscular. I play AAA hockey and there lies the reason. Anyway, i'm all good with the abs, as i'm rocking a 6 pack. So, I want to focus on my pecs. What exercises can I do? I have dumbbells, up to 40 lbs, bench press and something else. Some of you might say "Dont use weights ur too young". I dont care. So should I do pushups and weights or... And how long will it take? Thanks