How I created and use my analog Zettelkasten | Step-by-step guide

Analog Zettelkasten use hinges on a simple workflow: build an index as a “map,” capture reading notes in a bibliography box (bib cards), then convert only the most durable ideas into main cards that are filed close to related thoughts. The payoff is an analog system that forces selection—writing by hand and revisiting cards after a delay—so the collection becomes a source for output rather than a passive archive.

The setup starts with supplies: index cards (4x6 preferred, 3x5 acceptable), a pen (Micron pens with archival ink are recommended for quick-drying, non-bleeding notes), a storage box, and alphabetical dividers. The box is optional at first, but the dividers become important once the system grows. The core structure has three essential compartments: an index section, a main-card section, and a bibliography (bib) box for notes created while reading. A fourth element—a catalog—is described as optional but useful: it lists and numbers original sources so main cards can cite where each idea came from.

The index is built from 26 cards labeled A through Z and acts like a table of contents. Instead of indexing every single card, the index records key categories and entry points so retrieval stays fast. Main cards are the “heart and soul” of the system: each card contains a single idea, written as a thinking unit, and is filed under a category path that reflects how the idea relates to other cards. The numbering scheme is treated as flexible and changeable; what matters is proximity and the index as the source of truth.

Bib cards support the selection process. While reading a book, notes are written onto bib cards with bibliographic details (author, title, publication date) and page references. The notes include quick descriptions of what appears on each page, plus shorthand conventions (for example, markings to distinguish excerpts or references to footnotes). A key practice is bracketing: readers mark the exact passages in the book so they can jump back to the original context later. After finishing a book, the system recommends waiting—often two weeks to a month—before deciding what becomes a main card. That delay helps filter out ideas that no longer feel valuable.

Main cards are created by revisiting bib cards and then looking up the referenced pages in the book to read the ideas in full context. Before writing a new main card, the system emphasizes deciding where it belongs: the card should be filed as close as possible to the most related existing card. This is where “branching” appears—cards can be linked in a hierarchy using symbols like hyphens to show direct continuation of a thought, while other cards start new branches. The system also stresses purpose: it’s not meant to become personal knowledge management. The analog friction—handwriting, delayed review, and constant re-filing—exists to support producing work such as newsletters, videos, and other outputs.

Finally, the catalog keeps source tracking self-contained inside the box. Each main card can reference a catalog number and page location, tying ideas back to their origins without relying on external tools. The overall method credits Scott Scheeper’s Anti-Zettelkasten as a foundation, while tailoring categories and numbering to personal research needs.