First off we don't call them Guilds they're called Factions/Crews, you join a Crew and Crews make up a larger faction (almost like an alliance of crews). If you want to know what Factions are out there you need to go to the Syntax forum which is just below the Redpill Rescue and go to the Recruitment section there, otherwise when in the game head over to Mara C which is South of the Uriah NE hardline (the hardline you start at)
