In my experience, the female orgasm varies tremendously from woman to woman.
For some, clitoral stimulation gets them off more than anything. If you should be lucky enough to be with one, concentrate on the very top of the clit slowly with your tounge or finger as they get close. They usually will achieve multiple orgasms.
For others, only penetration seems to get them off. Their orgasms seem to be just as intense, if not more, but usually take longer to happen and seem to be more emotional.
Some don't seem to be able to orgasm at all. They get close but never actually cum.
Then there was the one girl who only got off with a finger or something up her ass. Weird.
To each his or her own I guess.