This introductory chapter provides context for the content covered in the rest of the book. Background on the evolution of the book and increased social work attention to psychodrama is offered while also defining the basic concepts of sociometry, psychodrama, and social work with groups. The importance of considering differences between cultures, populations, and countries is highlighted, especially as it relates to scope of practice of the social work field which varies between countries. Specifics of chapter topics are overviewed with suggestions to the reader on how to approach this book. Though the book explicitly focuses on social work, many other professionals will find this publication useful including group therapists, counselors, psychologists, creative arts therapists, psychodramatists, community workers, supervisors, and professors.