This is a pretty disorganized book by any standards. The author seems to have no sense of what he is trying to teach. It would have been so helpful if he had just had the reader create a project from scratch. Instead he jumps from from one topic to the next and then back again. If you want to learn Oracle dont buy this book. The best thing that I can say about this book is that it may serve as a solid reference after you have mastered Oracle.