Obsidian: Markdown Knowledge Management That Lives on Your Own Disk

#obsidian #markdown #notetaking #knowledgemanagement

Obsidian: Markdown Knowledge Management That Lives on Your Own Disk

Obsidian is a note-taking app that stores your notes as Markdown files on your own computer, not on a cloud server. Instead of locking your writing inside a service like Notion or Evernote, it links notes together so you can build a personal wiki. This post covers what it replaces, how to create your first vault, the three core linking features plus the core plugins, and what to know before you start.

Your notes live in a folder, not in the cloud

Obsidian's defining trait is how it stores data. Every note you write ends up as a plain Markdown (.md) file on your own disk. The folder holding those notes is what Obsidian calls a vault. A vault is just an ordinary folder — you can browse it in your file manager or open it with any other text editor without ever launching Obsidian.

That's the difference from cloud notes like Notion or Evernote. There, your data sits in a database on the company's servers, and you need an export step to get actual files back. With Obsidian, files are the output from day one — if the service disappeared tomorrow, your notes would still be sitting in the folder. That's why the official homepage leads with keeping your thoughts "private and on your device."

Aspect	Obsidian	Cloud notes (Notion, etc.)
Storage location	.md files on your disk	Database on the service's servers
Offline	Works by default	Limited
File ownership	The folder is yours	Requires export
Sync	Paid Sync or DIY setup	Built in
Personal-use cost	Free	Free-to-paid mix

There's a trade-off, though. The automatic sync and real-time collaboration that cloud notes give you for free are either extra setup or a paid add-on in Obsidian. More on that below.

Install and create your first vault

Getting started is simple: download the app from the official site, install it, and create one vault to hold your notes. The official docs walk through the same sequence.

Download and install Obsidian.
Create a vault (pick an empty folder where notes will be stored).
Create your first note.
Link notes to each other.
Import any existing Markdown notes.
(Optional) Sync across devices.

"Creating a vault" is nothing grand — it's just choosing a folder to keep your notes in. You can point it at a brand-new empty folder, or open a folder that already contains .md files as a vault. Many people run multiple vaults, say one for work and one for personal notes.

Three features that connect your notes

What separates Obsidian from a plain Markdown editor is how it weaves notes together. Three features do the heavy lifting.

Wikilinks — two square brackets connect notes

Type [[Note title]] anywhere in the body and it becomes a link to another note. If the title doesn't exist yet, you can create the new note right there. Unlike regular Markdown links, there's no path to type — just the note's name — so you can wire ideas together as fast as you think them.

Backlinks — notes that point at you collect themselves

When note A links to note B, opening B shows "A links here" in the backlinks panel automatically. Notes connected to a topic gather in reverse without any manual curation. You can see at a glance how a concept is referenced across your other notes.

Graph view — connections as dots and lines

Graph view draws every note in the vault as a dot and every link as a line. You can spot which notes are heavily connected and which sit isolated. As knowledge accumulates, clusters form — it's a feature for visually checking the state of your knowledge base rather than a daily driver.

Start with the core plugins

Much of Obsidian's functionality lives in plugins you toggle on and off. The ones that ship built in are called core plugins. You don't download anything — just flip them on in settings — so they're the right place to start. The most commonly used core plugins:

Daily notes — creates today's note in one step. Used for journals and accumulating quick memos.
Templates — inserts a predefined skeleton into a note. Reuse layouts for meeting minutes or reading notes.
Backlinks — the reverse-link panel described above.
Outline — shows the heading structure as a table of contents for navigating long notes.
Command palette — search and run any command from a keyboard shortcut.

Seeing what an actual note looks like makes it click. Metadata (frontmatter) goes at the top of the Markdown file, and the body weaves in other notes via wikilinks and tags:

---
title: Kafka consumer groups
tags: [kafka, backend]
created: 2026-06-06
---

# Consumer groups

For offset management, see the [[Kafka offsets]] note.
Rebalancing continues in [[Consumer rebalancing]].

Related topics: #messaging #distributed-systems

Written this way, [[Kafka offsets]] is one click away, and opening that note shows this document in its backlinks. The #kafka tag pulls up every note carrying the same tag in one view.

Extend with community plugins and Canvas

When the core features aren't enough, community plugins fill the gap. Thousands are officially listed, and you search and install them inside the app. Well-known ones include Dataview for querying notes into tables, Kanban for board views, Tasks for collecting to-dos, and Calendar for a date-based overview.

Canvas is an infinite-canvas feature. You lay out notes, images, and cards freely across a large surface and connect them with lines — useful for brainstorming and structuring ideas. It's a separate mode from written notes, for when you want to think spatially instead of linearly.

What to know before you start

The base app is free for personal use ("free with no account required" is the official wording). But there are costs and pitfalls worth knowing up front.

Sync is paid or DIY — the official Obsidian Sync runs $4 per user per month billed annually ($5 monthly). To avoid the cost, you can put the vault folder inside iCloud or Dropbox and let that sync it — but conflict resolution becomes your problem.
Publishing to the web is a separate product — Obsidian Publish, which turns notes into a public site, costs $8 per site per month billed annually ($10 monthly).
Work use needs a commercial license — using it for company work requires a commercial license at $50 per user per year. Personal use stays free.
Plugin quality varies — many community plugins are maintained by individual developers, so updates can stall and compatibility can break. Keep critical workflows on core features.
The initial freedom is the entry barrier — you decide the folder structure, tag conventions, and plugin set yourself, so setup takes more effort than note apps that hand you a fixed template.

In short, Obsidian fits people who want to own their notes as files rather than rent them from a service, and who want to link notes into a personal knowledge base. If you're a developer already comfortable with Markdown, you can open your existing .md notes as a vault and start immediately. Turn on a few core plugins, start connecting notes with wikilinks, and let the structure take shape as you go.

Installation: Desktop apps for Windows, macOS, and Linux plus iOS and Android mobile apps are available from the official site (obsidian.md). Personal use is free and requires no sign-up. On first launch, just pick a folder to use as your vault and you can start writing notes right away.

Sources

This is an objective overview based on the official documentation, homepage, and pricing pages — not a first-hand usage review. Features and pricing may change over time, so check the official pages before adopting.

Originally published at jessinvestment.com

Original with full infographics and visual structure: https://jessinvestment.com/obsidian-markdown-knowledge-management-that-lives-on-your-own-disk/