Use a mirror to learn and explore your genitals. Become familiar with the different parts and notice the sensations you receive from touching yourself in different ways. Dont expect miracles in one session. You may need to masturbate for a while before you can bring yourself to orgasm each time. Use fantasy or erotic literature to arouse yourself and dont be afraid of trying a vibrator.
Many women find the extra stimulation they offer very helpful.
Once you know what feels good and arouses you, gently introduce this information to your husband.