Here's a little tip: next time you go to a temple, or a cathedral or some other holy place, look around for paintings of demons. They're usually the ones surrounded by flames or charred bodies or something. Log them away, draw a little sketch if you want, and then when you're out in the woods looking for treasure chests or whatever, and you see one of these rising up out of a cavern, you check your sketch really quick to make sure, and then you run like hell. Simple as that!
