In the new book of Professor E.P. Ilyin, attention is focused on key issues in the psychology of informal communication. The topic is revealed as fully as possible. Psychological processes that induce and accompany informal communication are considered: perception and understanding of a person, attraction (attraction to another person), sympathy. Disclosed are individual and personal characteristics of a person, which determine attraction to him. The types of attraction (friendship, camaraderie, friendship), the degree of closeness of relations between people in informal communication, as well as the main forms of informal verbal communication: conversations, rumors and gossip are described. At the end of the book are useful techniques and a detailed bibliographic list. The manual is intended for psychologists, sociologists, teachers, specialists in interpersonal relations and public relations, as well as students of university faculties of relevant profiles.