I am always very happy to learn as well as teach. Good communication is important. I appreciate a girl that can push all my buttons, so why not tell her (or show her) what they are? And vice versa. If I'm going to see a lady on a regular basis I absolutely want to learn about her body and what she enjoys. Finding out what your partner likes is half the fun. Her finding out what you like is the other half.
By the way, speaking of communication - I try and leave the whole "improving technique" bias out of it. I just simply say "this is what I like" and "what do you like?". It's straightforward and non-judgemental. On both sides. Besides, every girl I've known is different to some degree so I've never learned a universal technique that works on all of them. Hell, I haven't found one technique that works on the same woman all the time.
The best thing you can do is ask her what she likes, or better yet get her to show you (maybe with her favorite toy). It's fun, hot, and educational. Watch how she pleases herself and take mental notes. But probably the best skill you can ever learn is how to read female sexual body language. Then you can listen and watch for that arousal as you work your way up the excitation curve. Pretty soon you'll learn to play her like a Stradivarius.
While we're on the topic of toys - if a girl needs some assistance getting that elusive O and grabs a toy to help get the job done, I'm all for it. In fact, I think it's awesome. She knows her body better than anyone and if she needs that special toy, vibration, technique, or whatever to push her over the edge - why not use it?
If you play your cards right you'll have two winners in the "Beat the clock to the big O game."
LOL