Howdy Dan, and welcome to Roll20! As you've seen, there are plenty of friendly people here willing to help you learn to enjoy our favorite hobby, RPGs! You're not the first one with these questions, and you won't be the last. Gamers are a little bit like that guy who just discovered something he thinks is awesome: we'd LOVE the chance to sit you down and show off what we know, that's how you make new gamers! As far as Pathfinder (possibly the most popular single game on Roll20) goes, pretty much all you need book-wise is right here: All the Pathfinder rules, online, for free! I've played with Belenus before in one of his Paranoia games, I think... he'll be a good guide to how R20 works. If you've got any other questions, just post, someone'll answer! And remember... have fun! -Phnord