Great as an overview, as a reference...eh.
I'm writing a college thesis on Pullman's His Dark Materials, so I was excited to find this book. However, I was slightly disappointed when it arrived. It's well written and a great overview, but if you've already started doing some looking and thinking on your own it doesn't give you much that's new.This book is a great starting point, and great for a fun read. I don't so much reccomend it as a primary reference, but as a helpful guide it's very well done.