[impendia]

I am jealous as hell. :)

To answer your question, the most useful two pieces of advice I've received are:

(1) Your attention is enough. Just be interested in her, pay attention to her, enjoy the experience.

(2) Don't be afraid of rejection. Will she dump you? Sure, it's possible. I've been dumped before. But if so it likely won't be because you made a mistake. Don't try to predict what will happen, just go for it. If things grow, great, if they don't, you'll still be glad you had the experience.