OK, this book is a few centuries out of our sweet spot, but the subject sounds really interesting. I'm wondering if it's worth my time. Anyone read it?
Witchcraft and Magic beliefs from the Middle Ages and the "Early Modern era" (roughly, Renaissance through to American Revolution) are entirely and completely different in almost every way.
However good or bad the book may be, it will give you precisely zero useful information about medieval magic, sad to say. Don't know if this is the best place for a review from that.