The Tarot Revealed was one of the first books I read about tarot as well. The Crow tarot looks like an interesting deck for sure.
Collecting decks can be a lot of fun, reading through the keyword books is rewarding as well. Each deck has it's subtle differences in interpretation so it's always interesting to see how each deck differs a bit.
If you open Crows Tarot please consider doing a deck review. I love reading about new decks!