Meditation guides are always flavored with the philosophical background of the author. In Kundalini meditation, that typically means : a lot of untranslated sanskrit, prayers to confusing Hindu gods, and a complete loss of real world application.
Morgen doesn't fall into those traps. By avoiding them, he makes this ancient and powerful meditative practice available to those who disdain gurus.
A very good guide by a "real world" author who avoids the ego trips and the cultural confusions.
Robert Morgen has written an excellent book for those interested in actually Awakening the Kundalini and successfully dealing with the aftereffects. I enjoyed it immensely!