General

Caniuse

'Can I use' provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

DevDocs

DevDocs combines multiple API documentations in a fast, organized, and searchable interface. Online and offline, always have your docs with you.

MDN web docs

Tutorials, references, tools and resources.

Rico's cheatsheets

Cheatsheets for any kind of technologies in the web domain.

Developer Roadmap

Below you find a set of charts demonstrating the paths that you can take and the technologies that you would want to adopt in order to become a frontend, backend or a devops.

ebookfoundation

Freely available programming books

Google Developer

Tutorials, guides, and best practices for building the next generation of web experiences.

Google Chrome Youtube

Making the web more awesome - latest news about google chrome

Code wars

Challenge yourself on kata, created by the community to strengthen different skills. Master your current language of choice, or expand your understanding of a new one.

Learn X in Y min

Take a whirlwind tour of your next favorite language. Community-driven!

The A11Y Checklist

This checklist uses the The Web Content Accessibility Guidelines (WCAG) as a reference point. The WCAG is a shared standard for web content accessibility for individuals, organizations, and governments.