How to Take Smart Notes

There is no single right way to take notes. Every famous system you have heard of was one person’s answer to one person’s problem, and the people who get the most from their notes are almost never purists. They borrow. They adapt. They keep what works and drop what doesn’t.

This guide is a tour of the systems worth knowing, with plenty of links for going deeper. Read it less like a manual and more like a menu.

Why bother with a system at all?

Most notes die where they are written. Highlights pile up, notebooks fill, and none of it ever gets read again. The insight shared by every system below is that notes are not storage, they are thinking. A note you write in your own words, connected to what you already know, keeps working for you long after you close the tab.

The best short case for this is Niklas Luhmann’s essay “Communicating with Slip Boxes”, in which the wildly prolific sociologist describes his paper note system as a genuine conversation partner. If you prefer something more modern, Vannevar Bush imagined the whole idea in 1945 in “As We May Think”, the essay that inspired hypertext, HyperCard, and eventually the tool you are reading about.

The systems worth knowing

Zettelkasten, the slip box

The system Luhmann used to write more than 70 books: thousands of small notes, one idea each, densely linked to one another. Ideas find each other through links rather than folders, and structure emerges instead of being imposed.

Sönke Ahrens turned it into the modern classic How to Take Smart Notes, which popularized a useful distinction between three kinds of notes:

Fleeting notes: quick captures while reading, made to be processed later
Literature notes: what a source said, rewritten in your own words
Permanent notes: standalone ideas, written for your future self and linked to everything related

If this appeals to you, the Zettelkasten.de introduction is the best place to start, and the community there has argued through every implementation detail you will ever wonder about.

Steal this: one idea per note, and link liberally. Even if you adopt nothing else, these two habits compound.

Commonplace books and marginalia

The oldest system on this list, used by Marcus Aurelius, Montaigne, Thomas Jefferson, and just about every serious reader before the twentieth century: keep a book of passages, quotes, and thoughts collected from everything you read, organized by theme.

Ryan Holiday’s notecard system is a living version of this practice. And its close cousin, writing in the margins, has its own manifesto: Mortimer Adler’s “How to Mark a Book”, which argues that a book you have argued with is a book you own in the fullest sense. His How to Read a Book expands the idea into a whole philosophy of active reading.

Steal this: talk back to what you read. A highlight with your reaction next to it is worth ten highlights alone.

Building a Second Brain

Tiago Forte’s Building a Second Brain is the pragmatist’s system, aimed at projects and output rather than scholarship. Two of its ideas travel well to any system:

PARA: organize notes by how actionable they are (Projects, Areas, Resources, Archive) instead of by topic
Progressive summarization: distill a note a little more each time you revisit it, so your best material becomes easier to find over time

Steal this: process notes when you need them, not because a schedule says so. Notes serve projects, not the other way around.

Evergreen notes and digital gardens

Andy Matuschak’s evergreen notes refine the Zettelkasten idea for the digital age: notes should be atomic, concept-oriented, and written to evolve over years. His working notes are themselves a public example of the form.

The looser, friendlier version of this is the digital garden, beautifully chronicled by Maggie Appleton: notes as plants you tend, ideas published while still growing, imperfection welcomed.

Steal this: notes are never finished. Revisit, revise, and let them grow.

Use what works for you

Here is the part most guides skip: you do not have to pick one.

Plenty of great thinkers run hybrids. A commonplace book’s habit of collecting, a Zettelkasten’s habit of linking, PARA’s habit of keeping projects in view, a garden’s tolerance for mess. The system that works is the one you actually use, and the one you actually use is usually the one you shaped yourself.

Start small. Highlight what strikes you. Add your reaction in your own words. Link it to one thing you already know. Everything else is refinement, and you can add structure later, once your notes tell you what structure they need.

Here is that entire core loop in action, exactly as it looks in Annote:

Notes are a conversation with what you read. When a sentence stops you, highlight it, answer it in your own words, and connect it to what you already know. your words, right in the text. tag it #notetaking or link anything| That is the whole loop: capture, respond, connect.

Where Annote fits

Annote is intentionally unopinionated about method. It is built on a linking card system, in the same family as HyperCard and the Zettelkasten: every highlight, note, and page is a card, and any card can link to any other with [[double brackets]].

That flexibility is the point. You can run it as:

A Zettelkasten: atomic notes, dense links, emergent structure
A commonplace book: highlights and marginalia collected as you read across the web
A second brain: tag by project, distill as you revisit
A garden: loose notes that grow links over time
Your own hybrid: whatever combination your reading life actually needs

Highlights work as fleeting notes, the notes you attach to them work as literature notes, standalone cards work as permanent notes, and AI suggestions surface connections you might have missed. But none of that is enforced. The cards and the links are the primitives, and the method is yours.