Linking Ideas With Tags: A Lightweight Take on the Zettelkasten

The Zettelkasten, German for "slip box", is a note system associated with the sociologist Niklas Luhmann, who reportedly used a large box of index cards to help him write dozens of books and hundreds of articles. Its core idea is simple: notes become more valuable when they're connected to each other.

The principles

• One idea per note. Keep each note small and focused, so it can be reused in many contexts.
• Write in your own words. Copying isn't understanding.
• Connect notes. Every new note should be linked to existing ones where it relates.
• Let structure emerge. Rather than planning categories in advance, let connections build a map over time.

The full system versus a light version

Luhmann's cards had unique numbers and cross-references, and modern tools add links between notes. You don't need any of that to gain most of the benefit. A notes app with tags and search can do a lot.

A tag-based light version

1. Write atomic notes. Each note captures one idea, with a clear title that states the idea, such as "Spaced repetition beats cramming".
2. Add two or three tags covering the topic and related themes: learning, memory, exams.
3. Mention related notes by title at the bottom, under a heading like "Related", so you can search for them.
4. Use a few status tags such as idea, to-develop or done, to show where each note stands.
5. Review regularly, looking for notes that share tags and could be combined or linked.

Why titles matter

In this system, you find notes by title and tag. A vague title like "Meeting" is useless; a title like "Client X wants fewer features and faster delivery" is instantly meaningful.

An example

Note title: Sleep affects memory more than extra study hours Tags: learning, sleep, memory Text: Short summary in your own words, one example, and a source if you have one. Related: "Spaced repetition beats cramming", "Exam week routine".

Searching for memory later brings up both notes, and you can see how they connect.

Turn notes into writing

When you want to write an essay, a talk or a plan, search for the relevant tag, and you'll find a set of notes ready to arrange. That's the real benefit: your notes become raw material for new work.

Don't over-engineer

Many people spend more time perfecting their system than writing notes. Start with a handful of notes, and let the system grow slowly.

Common mistakes

• Making notes too long and unfocused.
• Copying quotes without adding your own thoughts.
• Creating too many tags.
• Never returning to old notes.

Fit it to your needs

You don't need to be an academic to benefit. Anyone who collects ideas, such as recipes, work insights or hobby tips, can use tags and titles to build a useful, connected collection.

Organise connected ideas with tags in EasyNotes →