Take a read through THIS
..and some of the other FAQ's/Stickied posts.
Short story is that it's best to get out to a game and see/hear what's what in person.
Where are you located and are you over 18yrs old? Answers to both make a big difference.
I'm currently helping out a guy who got ripped off for $500+ and is still going to be out another $200min getting back on the right track with things...it really sucks, and there is a better way to go about it.