Good basketball workout by yourself?

Question

I've been playing basketball for about 4 years, mostly for fun, but I practice a lot afterschool and such. I am thinking of trying out this winter for my school's team, b/c a lot of my friends say I'm pretty good. What is a good b-ball workout I can do by myself that would improve my skills - mostly jump shooting.

Notes: I've never played organized b-ball (like in a league), I'm about 5'9", want to play PG.

Answer 1

take 20 shots from each spot every day.

Answer 2

jerking off it really builds the arm muscles lol jk yeah shoot the ball haha

Answer 3

Ok first take as many shots as you can from everywere not just one place.  

Also dribble around whatever you are playing on like go around the court or driveway 5 times using one hand oh and make sure to practice with wich ever hand you are not comfotable because if you whant to be a pg you need to be a great dribbler.