Psychology is the study of human behavior, thinking, emotions, and their development. It involves many different fields, including developmental psychology, social psychology, cognitive psychology, personality psychology, and so on. Here are some recommended books related to psychology: Psychology and Life by Philip Zimbardo This is a very popular introductory book on psychology. It uses vivid cases and examples to introduce the basic concepts and theories of psychology and how to apply this knowledge to improve your life. 2. The Crowd-Gustave Le Bon This book was a classic psychology book that talked about group psychology, the psychological principles of behavior and thinking, and how to understand human behavior and decision-making. 3.'Personal Psychology' by John Gottlieb Skinner This book introduced the basic concepts and theories of personality psychology, including the structure, characteristics, development, change, and influence of personality, as well as how to apply this knowledge to understand and improve one's interpersonal relationships and mental health. Emotional Intelligence by Daniel Goleman This book introduced the concept and theory of emotional intelligence and how to cultivate and improve emotional intelligence in order to better cope with various challenges in life and work. 5. Introduction to Psychology by Stephen R. Barker This book is a comprehensive introductory psychology textbook that covers all fields and topics of psychology, including basic psychology, developmental psychology, social psychology, cognitive psychology, and so on.