I'm going to give you a REAL answer with REAL advice. I've been running a profitable and successful adult entertainment business for well over a decade so read this answer carefully!
The majority of the answers you have received are incorrect or highly debatable.
A "try out" is referred to as an audition. Auditions do exist for both male and female male talent. Now there is a huge difference between a legitimate audition, and a flat out scam audition.
No legal and legit company is willing to pay, or pay very little for an unknown name or future talent. So there is a interview/qualification process and your asked to audition. These auditions will very greatly from male to female.
Generaly as a male performer your asked to get naked, and main tain an ercetion for a while and pose in differnt positions as camera men and women move close to you and sometimes the cameras will be 3-8 inches from your genitels.
If you lose your erection like 98% of the men who audition do, you'll be declined. That's why you rarely see any new male talent in the industry.
The scam artist will try and have sex with the men or women and tell them, you have have to audition, then people will do this without proper STD testing, and various legal paper required for this business, and they can do whatever they please with your audition.
Pay rates very greatly as well for men in this industry. Super Porn stars such as Ron Jeremy, Peter North, Nacho, and so on make a killing.
Your average joe will only make $100-$500 per scene, but alot of these guys will perform three scenes per day.
The best and easiest way to get into the adult entertainment business is to start you own company! Again you have to be careful of scams out there but I found a company that can help you.
I've meet two of the three people who run this thing, and I know for a fact if Lawarance G. Walters is working with them, then they have credablity because Mr. Walters is one of the top 5 adult entertainment attorneys and only works with professionals. Ray West has help countless people in the business.
Best of luck.