This text was not written as an instructional book. It is just the transcription of a coherent, but short set of lectures delivered by Sri Chinmoy. It is extremely well organized, clear, and concise. The author speaks with the solid clarity and mature good sense that usually arises only from a direct, complete, and deep personal experience. My own guess or intuition is that Sri Chinmoy has a total experience and complete personal command of this entire phenomenon, beginning to end. It seems to me probable that the author is "the real deal" even though I don't know him. In that sense, I regard this book as much better and clearer information than I could get from another source.
My own preferences are not purely informational. I don't like to read a book and say, "Well, that's interesting" and set it down. I like to practice its techniques and get somewhere. While there are some good and useful exercises that a reader can do from this book, the whole subject does not really lend itself to the active or avid amateur reader. The author explains in all detail that an actual teacher is required in this area. We can pick up a tennis racquet and make a try without having any coach or teacher. My hope would be more or less the same with Kundalini. As it happens, Kundalini doesn't work that way. So, if you, too, are a true avid amateur you might be somewhat disappointed with the book (unless, of course, you can find a teacher).
This is a great book for anyone who really wants to understand the Kundalini and its mystries.