User summary: GM's Resource presents hints and tips for the GM as well as data for various items the players ordinarily should not be aware of. It is presented as eight major HTML sections, namely: Running a Game, Item Values, Enchantments, Items, Swarmers, Bosses, Environments, and Custom Obstacles. Swarmers generally are weaker monsters found in groups while Bosses generally are tougher monsters that control a bunch of Swarmers or act alone. Environments presents several elements that players likely will encounter, including magical effects and traps. Custom Obstacles discusses methods for making campaign-specific opponents (monsters).