The book is addressed to psychologists leading training groups. In fact, it is a practical guide to leading groups, since it presents an analysis of all the most important points of this work. A distinctive feature of this book is that, in addition to specific recommendations, it contains a statement of the theoretical foundations of group work - an analysis of the nature of individual and group psychodynamics , discussion of the functional model of group management, highlighting two main directions of group development. At the same time, the reader will find in it a discussion of practical questions that concern every psychologist: What skills, knowledge and personal attitudes are needed by the group leader? What stages does the group go through in its development? Which attitudes of participants contribute to effective work, and which hinder it? What to do if difficulties arise? Like all books by K. Faupel, “Training Technology” contains a description of specific interactive games.