Bloodmoon Goblins
Abridged description from DriveThruRPG.com:
From award-winning RPG podcaster John Grana comes a new supplement for the Pathfinder RPG: a sprawling goblin warren and the tribe that inhabits it, fleshed out in full detail and turned into a campaign setting for goblin player characters.
Within Bloodmoon Goblins is all the information a gamemaster needs to bring a goblin campaign, full of action and intrigue, to life.