I may sound like a puss, but take it in steps. Start with the basics, build up to bigger jumps and rails and more technical tricks. Your going to hurt yourself if you just start hucking
Learn flips on trampolines first, try them into powder, then take it to the park. You'll eventually get comfortable trying tricks in the park and have an idea of what is realistic and what is going to get you hurt. Everyone takes slams, but I really believe you can limit injuries by using your head and being realistic about what is in your skill level.
Progressing is fun, but not being able to ski because you hucked your meat doing something stupid and got hurt is not.