The basics of psychology are of interest to both amateurs and specialists alike, as they contain information that touches on the daily lives of every human being. In this book, the author, Muhammad Fuad Jalal, presents the reader with research that includes everything that might interest him in this field, explaining the principles of psychology, which are represented in several terms: Such as: psychoanalysis, research methods, the unconscious, instincts, repression, the nature of the mind, dreams, mental functions, and neurotic disorders such as insanity or psychosis; in addition to schools of psychoanalysis and applications of psychoanalysis in medicine, education, art, health, and other important topics. In this way, it fulfills the desire of psychology enthusiasts to know the necessary information in a succinct and unobtrusive manner, and in an interesting manner devoid of complexity.