This practical handbook provides a complete program of study and practice for every student to awaken consciousness in the Internal Worlds: those dimensions we all visit each night, but only faintly remember, if at all. The aspirant tries to be conscious of his own dream; hence, he becomes a spectator and actor of a dream with the advantage of being able to abandon the scene at will in order to move freely in the Astral World. Then the aspirant, free of the limitations of the flesh, outside the physical body, will have discarded his old familiar environment and penetrated a universe ruled by different laws. The discipline of the dream state of Tantric Buddhists methodically leads us to the awakening of our consciousness. By the application of the techniques provided herein, any sincere person can achieve the awakening of the consciousness, and thereby come to know the truth of the mysteries that exist beyond the reach of our physical senses.