Masturbate and use different types of toys to figure your own body out. You must master your body before expecting someone else to master it for you. By learning about yourself you will be able to change positions and angles to get yourself off better. Highly recommend the following
NJoy wand
If you act quickly they are selling the Lelo Sona which uses sonic vibrations that are crazy effective they just came out with them and they are at an introductory price of 69.00
The hitachi magic wand is a battle tested vibrator that will actually desensitize you, when used too often. Taking a break once in awhile and using a less intense vibrator is advised.
If you listen to my advise, you will see things a lot differently then ever imagined….spend the money and get at least the first two. If every woman had those in the nightstand life would be so much sweeter