Well, here's what I'd advise, assuming you intend to play instead of host your own game: 1. Learn about the Roll20 system by watching videos and reading the Wiki. 2. Decide what game you want to play (Pathfinder, one of the D&D variants, Shadowrun, Call of Cthulhu, or whatever system you like.) 3. Look in the Community Forums for a GM hosting the game type you want, at a time you're available. 4. Post to their listing and hope you get chosen. 5. Listen carefully when they tell you how to make your character and do so using their ideas; share your ideas with them so you make a character that fits their game, but one you still want to play. If you're very new, ask if they have a pre-generated character you can play, that's often easier to start with. 6. Show up on time for every game, or let them know in advance if you're going to miss a session. 7. DON'T BE A JERK! (Yeah, I know you're cool, but I still feel this needs to be said. So many people seem to forget this part!) 8. Repeat from step 3 because even if you do everything right, something will go wrong and you'll need to find a new game to play! 9. Give up and host your own game as GM and hope you get some good players! Just kidding about step 9. Probably. q;}