This article has some thoughts about ways of masturbating that feel good to some people:
Going Solo: The Basics of Masturbation. There's no one thing that's going to feel good and work for everyone, so we can't give specific advice on what might feel good for you, but hopefully with some time and experimentation you can find something that does work well. It might help to aim for pleasure and enjoyment, not specifically orgasm, as your goal; putting pressure on oneself to reach orgasm can actually make the process more difficult, since stress or frustration can make orgasm harder to achieve.