15 year old basketball help?

So i'm 15 and im thinking of trying a rec basketball league. I was on a team when i was 13 but my schools levy didn't pass and it costs like 700 bux but its lowered down again. Anyways so i can shoot, dribble, do those fancy tricks, basically whatever a normal player could do but i haven't played in 2 years and i lose control of the ball every 5 seconds. Are their any drills or something that would help me improve it?