I agree with everyone else; if you aren't ready, don't do it. It's never good to rush right into things, think it over, and talk about it, and see if you get used to the idea, or even want to give your boyfriend oral.
My first time was with my current (and first, lol) boyfriend. I was nervous, too; completely worried I'd do it 'wrong'. But I actually really wanted to do it. (Don't ask me why, I have no idea why I wanted to, except maybe for knowing that he might like it. xD) And, I also agree with Charlotte, just think of it as ice cream. You can even look it up on google, as well. (I even looked up tips for about a week. xD) And deffinetly don't feel like you have to 'deep-throat' him. It's your body, and mouth, and most people have a gag reflex, too.
There's not really a wrong way to do it...I'm sure your boyfriend will love you just being anywhere near that area. lol. Just take it slow, relax, and talk about it with your boyfriend. Don't worry about being amazing, I'm sure most guys aren't expecting their girlfriends to be porn stars their first time. (:
You can
PM me if you want to talk. (:
--Emily