The tools to actually retain what you learn.
AI can summarize any book, generate any flashcard, and answer any question. But it can't make you learn. These four books cover the skills that still require a human brain: note-taking, active reading, spaced repetition, and deep focus.

Zettelkasten

Reading That Sticks

Spaced Repetition

Deep Focus
Kindle eBook · Available on Amazon

Book 1
How to Actually Learn in the Age of AI
A practical guide to the Zettelkasten note-taking method adapted for the modern era. Learn why AI summaries feel like learning but leave nothing behind, and how to build a system for lasting understanding.
Available in 7 languages

Book 4
Why AI Can Answer Any Question but Can’t Make You Concentrate
The prerequisite the other books assumed you had. Every technique in the Actually Learn series requires sustained attention — the one resource getting scarcer, not cheaper. This book shows you how to build a practice that protects your focus in a world designed to steal it.
Coming Soon
Coming SoonA standalone companion — not part of the series, but a natural pair with Spaced Repetition.

How to Remember Anything Using the Oldest Learning Technique in History
The method of loci — 2,500 years old, used by ancient orators and modern memory champions. A practical guide to remembering names, books, presentations, and everyday information.
Available in English and German

About the author
Senior Software Engineer based in Berlin. 10+ years of experience building scalable backend systems for fintechs and high-growth companies.
Also the author of the AI Engineer's Library, Hexagonal Architecture in Go, The Complete Guide to Go Programming, and creator of Hermes IDE.
Start learning for real
Four books covering the skills that still require a human brain. Available now on Amazon.
Kindle eBook · Available now