As is so often the case, the book is very different from the movie; in this particular case, it's even more important because the movie is so very entrenched in our society. For instance, I don't think that most people realize that there are at least two civilizations in the book that don't appear anywhere in the movie. In the book, the whole trip to Oz is not a dream! There is no fortuneteller in the book, and Dorothy's friends in Oz are not workers on her uncle's farm. And there's no evil neighbor tries to do away with Toto! But it's still a fun story, and despite the fact that most of the scenes you remember from the movie have nothing to do with the book, the story is coherent and complete. There are similarities in character between some of the characters in the book and the movie, but the personalities, particularly of the Woodman, in the book, are somewhat filled out. I first read this when I was a child, but I had forgotten the order of certain scenes and characters. Upon reexperiencing it, I understand why things are what they are and the order in which they fall. This particular version had a comment by L Frank Boehm stating that he was glad to write a fairytale that had no "moral" lesson, as gid most of those by the Brothers Grimm, and most of the fairytale writers of the 18th century and before. That was another aspect of the movie that really had nothing to do with the book.
Really a good book, and the narrator was pretty good too, although I don't think that I determine who it was.