There are three basic types of orgasm for women. Most women can reach orgasm through stimulation of the clitoris with the fingers, oral sex or vibrator.
A vaginal orgasm involving the uterus and reproductive system can be achieved by stimulating the G-spot. The G-spot is a spongy mass of tissue that swells when stimulated. It’s still elusive to a lot of women, but it can be found a couple of inches inside the vagina on the front wall. G-spot stimulation can produce a more intense, deep orgasm.
Blended orgasms are a combination of clitoral and G-spot stimulation. These can produce some of the most powerful orgasms, often accompanied by female ejaculation.
Multiple orgasms are a series of orgasms that happen over a short period of time and they can happen with any type of orgasm. After the first climax a woman can have sequential multiples where she stops for a brief period and then stimulation is continued, or she could have serial multiples, where there is no interruption in arousal.
A simultaneous orgasm is when a couple orgasm at the same time. This can be a wonderful experience, though probably not something you should aim to do every time...