I'm 14 and want to be shooting guard on the jv team next year and was wondering if anyone knew any good routines or programs to get better.

I don't know about the shooting guard thing. But, the following sites may be of use to you. I hope that they are.

Basketball Player Workout/Warmup Routine (http://www.mrbasketball.net/instuff/32articles/e92playerworkout.html)

Basketball Conditioning Workouts | Bally Total Fitness (http://www.ballyfitness.com/rapid_results/workouts/workout_pages/basketball.asp)