Can you eat a popsicle? Then you'll be fine at oral. Just don't bite him, unless he asks you to, lay a few ground rules, and you'll be fine.
Oral sex is the great equalizer. Not all of us can lift our partner in the air during sex, not all of us can do a split, not all of us can fire a ping pong ball with...well, you get the idea. But we've all got a mouth, and we can all use it effectively.
Mostly it's about observation: your partner will shift their hips away if something is too much and will shift their hips forward if they like something. Beyond that, just explore. Trust me, you'll be fine. If you're really worried about it, there are instructional videos galore on the Internet.
As far as ground rules, the key ones are really for him to keep his hands away from your head and for him to cue you if he's going to come, although there will be other signs. I'm not getting into the whole "spit vs. swallow" debate: that's something you'll have to decide for yourself.
Finally...I get a hundred questions a day, easy, every single day. Patience is a virtue, in questions or oral.
but Dan don't you know you are the only person who can answer this question!!! because you clearly are the only man who has ever received head and the sole person who holds the knowledge!
lol
chill out girl! its not that hard! first time getting head from a new girl, hes gona cum real quick.
Dear God yes, hands away from my head while I'm down there! Play with my hair if you want to, but you shove my head down and your fun is over.
Anyway, you can't go wrong if you don't use teeth and remember to use your hands as well as mouth. Never leave the balls dry! And just ask him if you're not sure, I mean I doubt any man would be against telling a woman what he likes - after all, he knows if he tells you what he wants then he'll get a good blowjob and no man turns down oral.
gotta say this.. heard it from a guy friend... relax.. the man is just happy to get it done good or bad.... smiles