If you have the string, stick it in the hole thats located in the track in the ball. Wrap it around the track until about an inch or 2 of strong is left showing. Pull the string hard and fast and it will get the ball spinning at a couple of thousand revs. Make sure you press on though before doing it lol, just dont hold the on button or you will erase the high score. To keep it spinning once its started and in your hand, thats just practice lol. Do it by making circular motions with your wrist. big circles to start with, and as it gets faster, bring the circles in. When it gets to about 11k, your wrist is hardly rotating lol.