Castaneda's books can be read as a philosophical/pragmatical text that express a world view by which a person can live one's life. There is a movement world-wide of practitioners of this philosophy, applying Castaneda's published ideas either independently or through consultation with Castaneda's associates.

This school of applied shamanism, sometimes called "nagualismo", purports to be unlike either traditional Western or Eastern culture (what about Northern or Southern(shamanism, Australia,African?)). Castaneda's ideas, insofar as they can be called a "system", share some similarities with Eastern mysticism ,Zen, Taoism, or Tibetan Buddhism in terms of the inherent order (or chaos) of the universe, disciplines taught and techniques used, but the underlying structure is fundamentally different.

There are three main elements to Casteneda's description of Toltec beliefs:

• Mastery of awareness - nagual (2nd attention) and tonal (1st attention), art of dreaming, description of the seers perception of luminous energy and bubbles of energy around living things (luminous cocoon) and ultimately the source of these energetic lines which are consciousness itself.
• Art of self-stalking - dealing with the world and actions in it.
• Mastery of intent - dealing with the primary force of the universe or the spirit or the means to move the assemblage point.

According to Castaneda, the most significant facts in a person's life are his possession of awareness and its impending termination at death. The primary goal of a Toltec "Warrior" is the continuation of his awareness after bodily death: to "dart past the Eagle and be free", in the words of the tradition, where the Eagle is the force which consumes the awareness of all living beings.

To cheat death in this way requires all of the discipline and procedures that constitute the Warrior's way of life. These practices are devised to maximise the Warrior's personal power, or energy. The condition of not wasting this energy is known as "impeccability".

Sufficient personal power leads to the mastery of awareness, chiefly the controlled movement of what is known as the "assemblage point". This is an artifact of the tradition's description of another world underlying what we perceive as ordinary reality. In this description men are glowing cocoons of awareness inhabiting a universe consisting of the Eagle's "emanations", described euphemistically as all-pervading filaments of light.

Humans' cocoons are intersected throughout by these filaments, producing perception, but they filter our perceptions by concentrating on only a small bundle. The assemblage point is the focusing lens which selects from the emanations. In its accustomed position, the assemblage point produces what humans perceive as everyday, 'normal' reality. Movement of the assemblage point permits perception of the world in different ways; small movements lead to small changes in perception and large movements to radical changes. For example, dreaming is presented as the result of a movement of the assemblage point; "power plants" such as Peyote, used in the early stages of Castaneda's apprenticeship, produce powerfully altered states of mind through such movement.

Castaneda describes complex and bizarre worlds experienced through the controlled movement of the assemblage point in dreaming; his premise is that the world of the dreams of a warrior is no less real than the world of daily life. This follows logically from the description of both worlds as being simply the result of positions of the assemblage point. He depicts complex interactions with unearthly beings in dream worlds and describes his fear of being physically trapped by these malicious but charismatic beings.

Amongst the various practices of a warrior, Tensegrity, a series of meditative stretching and posing techniques, is introduced in Castaneda's final works. The term is borrowed from architecture—"tensional integrity". Tensegrity is promoted by Cleargreen, Inc., a company founded in the 1990s, closely affiliated with Castaneda, which runs workshops and sells various materials relating to Castaneda's work. There are many individual and group practitioners around the world. Tensegrity and much of Castaneda's other work are the subject of a variety of recurring disputes.