This vibe coding cheat sheet explains how plain-language prompts can build apps fast, plus the planning, testing, and security checks needed.

This is intended as a quick reference and showcase. For more complete info, see John Gruber's original spec and the Github-flavored Markdown info page. Note that there is also a Cheatsheet specific to ...

This is intended as a quick reference and showcase. For more complete info, see John Gruber's original spec and the Github-flavored Markdown info page. This cheatsheet is specifically Markdown Here's ...

Learn how to make the most of Observable JavaScript and the Observable Plot library, including a step-by-step guide to eight basic data visualization tasks in Plot. Built-in reactivity is one of ...

Download a PDF edition. Visit the Lesson Resources at the end of this page.

Tailwind packs a lot of power into a memorable and concise syntax, making it a fast-rising alternative to the likes of Bootstrap and Foundation. Tailwind CSS is a newer CSS framework first released in ...

The programming language JavaScript emerged 25 years ago and has grown to become one of the most important pieces of the web and browser applications we use today. JavaScript is the go-to language for ...

Many technical writers either currently use or interested in using Markdown to write their technical documentation. It’s a bit like Marmite — some people love it and other people kind of hate it.