Newwbie c:
Welcome!
What ShadoPrism said. If you intend to become a Game Master, definitely look at the GM's Help, too. RPoL has a toolkit like no other for building and organizing a game.
Hang out in Community Chat and get to know the place a little; get a feel for how it works (and how it doesn't).
More importantly, when you're comfortable, dive in. Get involved in or create a game or two, and go from there.
Have fun - that's why you're here.