I thought the same thing. There's some information in the Coven library, but you have to dig for it and you have to know what you're looking for. You're more likely to get general overviews than specific information, and it doesn't really cover the aspect of turning into a Monster.

[Since it's all existing research and the locals don't have to change form the way Mirrorbound do when they arrive.]

So I guess that's another thing I wanted to cover - what to look out for and how to tell what you're turning into, because that's just not a thing unless you ask around with Mirrorbound.