Das Zettelkasten-Prinzip, Söhnke Ahrens, 2017

The book presents the Zettelkasten method as a powerful approach to organizing knowledge and fostering deeper thinking. It emphasizes that taking notes alone is not enough—integrating them into a continuous thinking process is key. By structuring notes around personal insights and connections rather than rigid categories, the Zettelkasten becomes a dynamic tool for developing ideas over time.

Top 3 Learnings:

1. Notes should focus on personal thoughts and questions rather than simply storing information—each permanent note should capture one core idea for future retrieval.
2. The writing and thinking process is non-linear; engaging with open questions and making cross-references leads to deeper insights and meaningful connections.
3. Effective organization relies on linking related ideas rather than strict categorization, turning knowledge into an evolving, interconnected network.