Although Joyce Wycoff's book gets off to a very slow start, it later proves to be quite useful and inspiring.
The first sectioned bored me with too much "how to use this book" information and information about how the mind works. I kept wondering when in she going to tell me exactly what mindmapping is and how to use it. When will the commerical end? Also, Joyce sometimes loses focuses and starts lecturing me about "avoiding sexism" and the importance of using short words in my writing. This has nothing to do with mindmapping. The book would be better if it focused more on the technique of mind mapping itself.
There are some excellent and inspiring ideas, however, on how to use mind mapping. I've already used some of these ideas and the results have been quite satisfying. The material includes ideas on how to use mind mapping for:
Group brainstorming sessions. Creating and using To-Do lists. Preparing for and Making Presentations. Improving Learning Skills. Mapping for personal growth.
I highly recommend Wycoff's MINDMAPPING.