Oh, there's a wealth of info in that book. You've got angels, demons, "angelic script," a spell for creating a magic carpet, assorted incantations, the multiple names of Lilith and a mind-boggling bibliography. It's totally hardcore. Of course, whenever I look through it, I wonder why SPN can't come up with some better demonic villains, when there's such a bottomless wealth of material just there for the asking. Happy reading!