Training for the game of Basketball comes in all shapes and sizes, it may not look like it can but this is a perfect piece of equipment to strengthen your arms. Try and do 3 Sets of 12 Reps.
Depending what hand you use, I use the left hand in this video, First step is to twist your hand all the way to the right then quickly to the left, try and spin the ball as fast as possible then toss it slightly into the air, after doing that stick out your index finger and keep it balanced with the balls movement.