Not to worry... Everyone has to start somewhere, but you know what the best way to learn technique with a new partner? Ask her. Flat out. (in fact - no matter how experienced one is, each partner will be different. Ask all your partners) talk about sex, talk about sexual techniques, ask her what she likes, what she doesn't. Communication is the key - the more you learn about what she likes, the more you can start to feel better about it, and then even take it as far as improvising. A group of women cannot tell you exactly what your girlfriend would like. Some women like one thing, where some women prefer another, we are not all the same.

If you learn from her, learn to listen to what she likes and doesn't like, if you learn to communicate about sex (and not in a "hey baby wanna get some:" kinda way - which I think you know, given the tone of your post) it can only get better for the both of you.

Good luck

I definately agree with teenytoona, dont be to shy or afraid to ask your partner what she likes, how else are you going to learn, when I met my husband 10 years ago he felt the same way every person is different we all like different things, you should be comfortable with eachother enough to have that closeness and experiment with new ideas

You mentioned that it takes her a long time to orgasm - if you are starting from the very beginning with oral sex trying to make her orgasm you are going to get tired and completely worn out before she is even close. My suggestion is to use other things like your fingers to stimulate her and then once she is primed and getting closer to orgasm switchover to oral. That way hopefully you won't get worn out before she reaches climax and you can give her oral all the way up to and through her orgasm.

Yes, I agree with floridagirl. I recently read a statistic...The average amount of time a guy has to spend "downstairs" before a girl orgasms is 20 minutes.