the roll20 interface is more or less like a table that you can draw on, and use to show graphics, maps, counter tokens for a character, or to play music or sound effects. Characters would be based on whatever game system a specific group is using. There are dozens of game systems in use, and hundreds of groups. So the first key would be to find a group by looking in the looking for group area of the site at the top, just right of the community forums link. You could also post a message saying "Here I am, I'd like to try [put a game in this space]." But there are so many people posting those it's tough to be heard among the crowd. You could also send a message to a specific GM running a game by applying to thier game, or applying in a recruiting thread in "looking for game threads." There are a lot of new people arriving daily, new to roll20, new to roleplaying. You are not alone, though it might feel lonely. My own group is full. Lots are, some aren't. It might take some work, you might get lucky. The key is to be polite, ask around, and be diligent. If you are cool to people and polite, eventually you will get a spot somewhere. You might try a game initially not to your taste to just "Meet a group" then later they might play a game you are interested in. That first getting in to a group barrier is typically the toughest to manage. If you get a reputation for being pushy and whiny, people will avoid you, word gets around. So, diligence, politeness, and taking the time to just write notes to people running games SEEMS to work okay. One big key: if you are willing to actually Run a game, and it's in a decent time slot, you can meet a dozen people in two days, just like you, seeking to form a group. Some groups go the entire opposite direction and say "We want to play game X, we need a DM." So they form a knot of a core group of 4 or 5 players. If a GM shows up and takes it on, it runs. if not those last a few days to a week. That's howe I got my own One Ring RPG going. Two different groups wanted to play. I happened to be looking for players for the One Ring system. I merged both and I got 6 players out of it. Two dropped, 2 applied late into the process. I then ran an extended length welcome to Middle Earth Adventure over a period of hours that the players reported they greatly enjoyed, and they want to continue to next week's session. All of this happened in less than two days total. So it can happen a lot faster if you know a game or are willing to try to run a game. Even if you are brand new, there are others brand new as players who don't mind a brand new GM. They all learn together. I have seen a few of those games start up in the week. So Welcome to the Roll20 Community. Diligence pays off.