Put your hand around your dick, and kinda grab it like a lever (lmao)
Go up and down. Sometime during this it should be feeling good. Keep going until you have an orgasm, or a rush of energy that feels really good.
Here, why don't you just go the the jackin' site lol
Read up on facts about masturbation there. You probably should read some facts about it in the FAQ sticky in this forum.