If your an experienced Filemaker user, this book is not going to hold much attraction for you. However, for those who are new to the filemaker world, or perhaps those who have used filemaker but not made use of its more powerful features, this could be the book for you. So while the promotional text for this book might claim its good for all levels of users, I would say that is an overstatement. Some of the areas where the book excels would include its information on web publishing and security. If your hoping to unlock the power of Filemaker pros scripting ability, then this volume will fall short of the mark. I would suggest "Scriptology" for that need.
Also to the books credit is its appropriate use of screen shots (from both platforms) to make things clear.
In short, a well written volume with general information that is appropriate for the novice or beginning intermediate user.