Recruit friends. Out of my current group, only one (of about 7) had played before (I think). But yeah, find your friends that are into fantasy, video games and the like and see if they want to try a game or something. Run a few one-shots, or a simple campaign and see how they like it.
Or, consider checking around (if you are at a high school or university or something) for a club or the like that has RPG gaming...