Pornstar Asia Carrera answers on some of these.
How can I get into porno movies?
This is one fantasy that's better left as a fantasy. There's a reason why you always see the same guys over and over in every movie. It's because there are very, very few guys who can perform on command under the demanding, grueling circumstances of shooting a movie. Imagine: it's 5am, you're exhausted, 15 crew guys are grouchy and waiting on you to perform so they can go home.