Full of gorgeous ink images & stimulating ideas to explore in ink. Definitely an A book. I would rate it A+ if author made it more beginner friendly. She explains very well on p.12 about picking the right (sturdy) paper, etc. if you're sloshing ink and water around.
But she doesn't refer readers to that crucial intro material when she writes the how tos throughout the text. So a newbie reader who skips intro material could end up with extra disappointing results/soggy mess. This, however, is a minor quibble. I'm very* happy with this beautiful book.