This one gets me every time-

Are you looking for a top or bottom date?

Think both have been mentioned here in the past, search for the terms you are asking about and see what turns up.

Good luck.

Like the mods said. First have an idea of what you are interested in doing. If you are looking to be topped then don't pick a lady that is predominantly bottom. Do your research by reading full reviews on here. Scan the forum, lots of info and listen to the mods, they really helped me. Most girls are ok with first timers from what I've seen, but be sure to tell her it's your first time so if she isn't newbie friendly you can move to the next. People on this board are very helpful if you do the right work: figure out what you are interested in, scan the reviews for good candidates and if you come back asking some specific questions with names of girls and such (like links to their ad or reviews) you'll get a better response...especially from the mods who actually know many of the reliable ladies because you are at least putting in some effort rather than just throwing out a general 411 like so many do here.

As for how to act, be polite, respectful and well groomed. Treat it like a date. As for expectations go in without any...just let it flow naturally...those are the best sessions anyway. Yes, it's a business transaction, but if you are a nice guy and treat he well you might have some chemistry and have the best sex of your life. Just don't be an ass and you'll be fine. The key is pick a well reviewed and reliable lady and let nature take it's course...leave your hangups and preconceived ideas at the door and enjoy. It's sex after all and should be fun. Good luck!