how can a male masturbate?

Get naked and lie down on your bed on your back. begin my gently touching / rubbing your testicles, penis and between your testicles and anus. Once your penis is hard, take hold of it in one hand and move your hand up and down so it rubs over the head (top) of the penis and down the shaft. (adjust the firmness of your hold so it gives your pleasure). Keep stroking up and down. You will get a tingling or strange sensation as you near climax / orgasm, keep going until your feel a very pleasurable pulsating feeling in your penis and between your legs. Depending on how old you are and how far though puberty, you may shoot cum / semen when your reach orgasm.