The Awakening of Kundalini, not exactly a how-to-book, describes the effects, possible side-effects, misconceptions and spontaneous experiences of people from all walks of life and from different cultures, different backgrounds, many of whom have never consciously worked on awakening kundalini.
The author briefly touches upon the practices from other traditions, such as the cultivation of sexual energy as practiced in Taoist tradition (for more on this, you may check one Mantak Chia's books). He points out that the goal of yoga, and the goal of awakening of kundalini is union with the divine, as well as that all of the alchemical practices are focused on changing the flow of energy from having it flow downward and outward, to having it flow inward and upward.
"In a healthy and harmonized system, on the arousal of Kundalini, a constant stream of sublimated reproductive energy, in radiating waves, rises int the brain, causing an inexpressible state of rapture and a breathtaking, marvelous transformation of consciousness. The pressure on the organs of generation is instantly released and the sexual appetite diminished or completely lost."
A good deal of this books deals with all sorts of things that may go wrong in people who are not properly prepared (all esoteric systems begin by preparing the idividual through an assortment of practices related ot physical, mental, emotional and spiritual purification) or who approach the practice with primary focus on material or sexual gratification instead of spiritual.
"Whatever the approach to the supernatural, the occult, and the divine, the ultimate target will remain the same, for the soul will never rest content until it has the beatific vision of itself. Those who take to yoga or any other occult or spiritual discipline, even if they gain a certain amount of calm and deeper insight then before, will still continue to try other methods and disciplines until the Supreme Light is experienced."