This guidebook, written by Motherpeace creator Karen Vogel, is a simple companion to the Motherpeace Round Tarot Deck. This is the first book I used when working with this deck. I later added a guidebook written by the other creator of the deck, Vicki Noble, which gives additional insights on the numerology and symbology within the cards. I hope to carry the Vicki Noble book in the shop soon!
While this book theoretically could work with any deck, it really is unique to the Motherpeace and I don't recommend it as a general purpose tarot book.