In the 260 pages of text this book contains, you'll actually get 3 books.

The first one is mostly Tad James' work and discusses the notion of "time line therapy", which are essentially NLP techniques in which a time line is used (the basic idea it to look for part occurrences of a problem that announces itself today, and "change" one's subjective experience, in order to live one without the problem - for instance, if one has a phobia of mice, go back to the first experience you had of being scared of mice, etc). You'll find more extended versions of the ideas discussed in this part in other NLP books, such as Bandler's Magic in Action, his "Using your Brain for a change" or the book "Magic demystified" by Lewis & Puchellic.

The second and the third part are mostly Wyatt Woodsmall's work. The second part deals with meta-programs, and borrows heavily on the MBTI (see Myers' "Gifts Differing) and the work of Leslie Cameron and her students (such as Rodger Bailey) - a more extended version of that work can be found in "Words that Change Minds". In the part on "values" you'll find the Graves model, which in meanwhile also has a full book dedicated to it, namely "Spiral Dynamics" by Don Beck and Christopher Cowan.

Unless you are already specialized in the topics covered in this book, you'll find them introduced in a readable way here. That by itself makes this book a good place to start. Afterwards you can always find more precise information in to the other books I referenced here.

The only reason why the book didn't get 5 stars is because it fails to quote some of the sources they got the material from, especially in the area of meta-programs. The fact that nobody filed a claim against the authors for that is probably the best proof that this material in now in "the public domain".