to sexually pleasure one's self.
first read the example of sex (#4) or something else, like porn, to make you horny. Next, lick at least two of your fingers, the more there are the better it feels, and stick them in your pussy, rub them around and make sure that you are wet. Once you are wet, use those fingers to rub your pussy in a circular motion, I prefer hard and fast. If you have an electric toothbrush, use the vibrating bristles to rub your clit. Keep rubbing until you orgasm. Trust me you will be glad you did.
Pull up and down on the shaft of your penis as hard as you like, rub it until you cum and orgasm.