This book gives what seems like a reasonably good description of each of the three OMT models: object, functional and dynamic. Unfortunately, when attempting to use the ideas presented, one becomes immediately aware that no explanation of how to use all three models together is given.
Looking at the examples, one finds that the examples in each model's section are totally unrelated to the examples in the other two model's sections. Essentially, the authors have fabricated example systems for each section that are easy to describe using that particular model, but have failed to show the other two models for those systems. This book would have been far better if the same set of examples were carried through the three types of models, showing how they interrelate.
The primary problem with the book, however, seems to be that it's about OMT. OMT has many serious flaws. OMT's object model notation is reasonable. The functional model notation is satisfactory. The dynamic model is incomplete. And the three models are not related to eachother in any clear way by this book. Without fixing the flaws inherent in OMT, any book on OMT is going to be mostly useless.