Ok, I found out about this via the wonderful Penny Arcade. I'm a huge Star Wars fan. But I've never really gotten into tabletop RPGs. I know this is fundamentally different from D&D, and the style sounds very interesting, but I don't know much else. I know Amazon has a beginners set, and the site here has a rather expensive core rulebook, and a GM kit.
My question is, as people who play the game, what are each of these really, what should I get? The beginners set seems like a safe bet, but what do I upgrade to from there if I wanted to? Anything else I should know about the game?
Thanks for any help!