It's been a while since I've done any reading on the subject, and - to be frank, it's not something that comes up in day to day conversation. Not in Canada, anyways.
So - a bit of research down obscure rabbit-holes, some curious books and grimoires indeed, and - magic of the internet - most of it is available online.
So, without further ado, to begin:
- Wiki on Demonology
- Wiki on The Pseudomonarchia Daemonum
- Wiki on The Classification of Demons
- Wiki on The Testament of Solomon
That's a start, and should keep you busy for a few days (or weeks). And, yes, with a very little bit of searching you can find the originals online and in translation...