The textbook provides a compact introduction to practical methods of online counseling and therapy and is well-prepared didactically. Digital media are on the rise in psychosocial counseling and therapy. This introduction to online counseling and therapy presents research and practice in three areas of clinical psychological intervention in internet settings (information, counseling, therapy), along with their opportunities and limitations. It explains the effectiveness, the media-related changes in the therapeutic relationship, and the clinically relevant impacts of internet use. Practical methods, questions for each chapter, and further links make this book an essential foundation for training in online counseling and therapy.