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The Art of Note-Taking with Obsidian

~4 min read
#obsidian #productivity #notes

The Problem with Notes

For years, my notes were digital landfills. Google Docs full of half-finished thoughts. Notion databases I set up once and never opened again. OneNote notebooks where ideas went to die.

The problem wasn’t discipline — it was architecture. Traditional note-taking apps treat notes as isolated documents. But ideas don’t exist in isolation. They connect, contradict, and compound.

Enter Obsidian

Obsidian is a markdown-based note-taking app that stores everything locally as plain .md files. No cloud lock-in. No proprietary format. Just text files in a folder.

But the magic isn’t the format — it’s the linking.

The Double-Bracket Revolution

In Obsidian, you link notes with [[double brackets]]. Write a note about “Binary Trees” and mention “Recursion”? Link it: [[Recursion]]. Now those two notes are connected. Over time, your vault becomes a network — a graph of interconnected knowledge.

The Graph View

Obsidian visualizes your links as an interactive graph. After a semester of notes, mine looks like a neural network. Clusters form around subjects. Bridge notes connect disciplines. You can literally see how your knowledge is structured.

My System

I use a modified Zettelkasten method:

  1. Fleeting notes: Quick captures during lectures or while reading. Raw, unpolished.
  2. Literature notes: Summaries of source material in my own words. One note per source.
  3. Permanent notes: Atomic ideas — one concept per note, written as if explaining to someone else.
  4. Maps of Content (MOCs): Index notes that curate links to related permanent notes. My “Discrete Math MOC” links to ~40 notes.

Daily Notes

Every day gets a note. It’s timestamped, and I dump everything into it — tasks, thoughts, lecture highlights, random ideas. At the end of the week, I process the fleeting notes into permanent ones.

## 2026-02-05

- Lecture: Graph theory — Euler paths vs Hamilton paths
  - [[Euler Path]] requires all edges visited once
  - [[Hamiltonian Path]] requires all vertices visited once
  - Connection to [[Travelling Salesman Problem]]?
- Idea: Blog post about why note-taking is underrated
- TODO: Review [[Binary Search Trees]] before quiz

Why Not Notion?

Notion is powerful, but it’s a database tool, not a thinking tool. Its strength is structure. Obsidian’s strength is emergence — patterns you didn’t plan for surface naturally through linking.

Also, Notion requires internet. Obsidian works offline, starts instantly, and will never put my notes behind a paywall.

The Takeaway

Your notes aren’t a record of what you learned. They’re a tool for thinking. The act of linking, restructuring, and revisiting notes is where understanding happens.

Your second brain is only as good as the connections you build.

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