Being in the middle of a messy project this book came to me a little late. I consider is one of the best introductions to
the understanding of what a use case is and WHAT things you should put in it. Everbody has suffered for long endless meetings discussing which is the scope of the use cases and how it should be used, I strongly recomend to read this book before start arguing.
I give it four starts because it lacks in some way of paths that can work as guidelines trough the process, although is not the focus of this book, it would very useful to include a couple of pages reviewing this subject.