# Markdown Reference Index > [!abstract] What this note is > The map of this folder. Markdown is the plain-text formatting language every Obsidian note is written in — these notes cover it from first keystroke to power features, each one self-contained. ## Start here 1. [[Markdown Basics]] — headings, bold/italic, paragraphs, line breaks 2. [[Lists and Checkboxes]] — bullets, numbering, nesting, task lists 3. [[Links and Embeds]] — wikilinks, external links, embedding notes in notes ## Everyday tools 4. [[Images and Attachments]] — embedding and resizing images, where files land 5. [[Tables]] — building and aligning tables (and when not to) 6. [[Obsidian Callouts Reference]] — the colored info/warning/tip boxes 7. [[Code and Code Blocks]] — showing code and raw syntax without it rendering ## Under the hood 8. [[Frontmatter and Tags]] — the metadata layer: properties, tags, and when to use which 9. [[Footnotes Comments and Escapes]] — citations, invisible notes-to-self, literal characters ## The one-minute version ```markdown # Heading **bold** *italic* ==highlight== - bullet 1. numbered - [ ] task [[Internal Link]] [web link](https://example.com) ![[image.png]] `inline code` > quote ``` > [!tip] How these notes are written > Every note shows the raw syntax in a code block *and* what it renders as, defines jargon the first time it appears, and ends with where to go next — a house style for humans picking up Obsidian for the first time. See [[Vault Schema]] for the vault-wide conventions.