This book is an attempt to help students internalize the most important aspects of practicing and performing music: Mechanism, the set of acquired reflexes that makes playing the guitar possible; Technique, the procedures to follow in order to master a given passage or overcome a given difficulty; and Learning a Mechanism or Technique, the process of acquiring a reflex or of mastering a passage or overcoming a specific difficulty.  The exercises strive to ingrain proper techniques and mechanisms both physically and mentally, making the interpretation of music as natural to the guitarist as walking.