About half of all women have trouble having an orgasm. Of course, it isn't necessary to climax during intercourse in order to be sexually satisfied. However, if one wants an orgasm during intercourse, most women need more stimulation than just intercourse, for instance extensive foreplay or stroking the clitoris during intercourse. Yet, it is a safe bet that sex is better with an orgasm than without one.
Most women can, with practice, learn to have an orgasm either during or without intercourse.
Barbach has written the most. Hutchins has perhaps the most straight-forward technique. Secondly, the woman slowly becomes comfortable examining and touching herself, especially her genitals. Third, after she has learned to orgasm easily, the woman then shows her lover how she masturbates and teaches him in detail. Fourth, the male masturbates her in the same way until she can have orgasms regularly.