This is the step-by-step guide on how to set up and understand the principle behind the note-taking system that enabled Luhmann to become one of the most productive and systematic scholars of all time. But most importantly, it enabled him to do it with ease. He famously said: “I never force myself to do anything I don’t feel like.” Luhmann’s system is often misunderstood and rarely well explained (especially in English). This book aims to make this powerful tool accessible to everyone with an interest in reading, thinking and writing. It is especially helpful for students and academics of the social sciences and humanities and nonfiction writers.