Niklas Luhmann is one of the great social analysts of the 20th century. He examines society and its subfields as social systems that consist solely of communication. His theory enjoys high regard in the social, cultural, economic, and legal sciences. However, accessing it can be challenging: Luhmann's work is complex, and the language is complicated. This book offers valuable assistance. It presents the theory in an easily understandable way. This is achieved through a clear presentation of the material in manageable steps, along with numerous examples, diagrams, and cartoons. The text is intentionally kept simple, but Luhmann himself is also quoted extensively. Readers, including beginners without prior knowledge, will find it easy and enjoyable to get started. An excellent, enjoyable introduction to Luhmann's theory.