This manual helps you to independently lead psychoeducational groups on the topic of dual diagnosis of schizophrenia and addiction. The manual explains how to structure and present the content, how to convey the illness in an understandable way using accessible explanatory models, how to work with participants to develop "ways out of dependency," what problems may arise in the group setting and how to solve them, as well as which scientific studies demonstrate the effectiveness of the concept. All working materials are available for download.