I rented the movie version of Howl's Moving Castle a few months ago, and it was a bit confusing but still quite fun. The book possibly makes less sense than the movie, which I didn't think was really possible - how could anime come out as a logical story? But, it sort of happened.
At any rate, while some things were explained more clearly in the book, I didn't really understand the last bit at all. Maybe someday when I'm not sitting in Jarom's history class trying to ignore the professor talking about ancient geography, I'll try reading the book again. Until then, I'm just a little too confused to really know if I liked it much or not. Although I think I did.