well i know for me, that wouldnt be enough to orgasm. stimulate her clit while your doing that, and it may work. im not an expert, even tho im a girl haha. but i do know thats not enough. and with the how many fingers thing, take it slow, start with one and then after awhile go to two. especially if shes never gotten fingered before.

From a slightly experienced man:

Instead of just moving your fingers in and out, maybe you should move them around, in circles inside her, etc., i dont know, just don't be so focused on "in and out" that you don't try anything else. Also if you wanna increase the chances of her enjoying it, use your tongue and fingers at the same time..

It all depends on the woman. Each one responds differently to different kinds of stimulation. If you are starting with someone, your best bet is to try a variety of things and pay close attention to her reactions so you can know what she likes.

Even if one technique was really successful with a certain woman, it's possible that it won't have any effect on the next woman.

how i prefer is to use 2 fingers... the bird and the ring finger.
Dont just poke in and out like moose said... i like if the entire hand is on my vagina, that way when you are moving your hand front to back to finger.... the palm of your hand is rubbing on the clit

I can come from just that..but I prefer clitoral stimulation as well. It all depends on the mood, I like it different a lot.

hey you can try useing a condom on your finger to soften your nail.

I've read that many women do not involve deep vaginal stimulation when they masturbate. I've also read that what women enjoy from penetration is the sense of fullness they experience. Would any of the fairer sex care to opine on any of this?

It is important to understand that the important nerve endings are located at the entrance of the vagina, just outside and inside. Involving these nerves while providing other forms of caresses intensify the overall sensations.

Take your finger and move it al around the outside. Then in take turns doing that then try it with two or three. Olay around with that and you can tell what she likes through playing. You will be able to tell.

It depends on the person. But yes, it is very possible to orgasm from that. Try to do it with some finess, you know, dont just stick them in and out, use circles and rub against the walls and go faster or slower depending on how close she is to cumming. It's nice to use your thumb to rub her clit while your fingers are inside her. As for how many fingers, it depends on the girl and how tight she is and what she prefers. If this is her first experience, start out with one. If she is looser, you may need to use more. Two is a nice number though.