This was an interesting book. It's a great introduction if you want to learn more about some of the references in the first four Harry Potter books. There were a lot of sections I wish Colbert would have elaborated more on, but he does a good job of giving some basics about various topics. Also, the book contains an Afterward suggesting other books to read to get a more in-depth view of some of the subjects discussed. Overall, it was a cool read. I am looking forward to reading some of his other books, such as The Magical Worlds of Lord of the Rings.