There are lots of rp guilds you can find by asking in game or checking forums.
Personally I'm not a big rp player but in this game it's so extremely easy and fun. I like how your not exactly defined as the hero from the start. Do you want to be? Sure then you are, do you want to just be a mercenary doing things for a pay day? Why not. You can make choices to kill and save allies, make your character look any way you want, lots of cool mount options, beautiful beautiful rpg world that's huge.
Combat I think is a little boring and clunky but past that best mmo I think out there.
Welcome and enjoy!!