Sigmund Freud 
General Introduction to Psychoanalysis [PDF ebook] 

Though it has now fallen out of favor among many practitioners and scholars, Freud’s concept of psychoanalysis — an approach that focuses primarily on adverse events in early childhood and irrational drives that are overcome via extended talk therapy — was and continues to be enormously influential, not only in the realm of psychology, but also in the larger culture. This volume offers a comprehensive overview of psychoanalysis from the point of view of the field’s creator.