Resources

Tools

• Search: Google, Bing, DuckDuckGo, Solve for all
• Color: Color Picker, HTML Color Names, CSS Color Names, Color equivalents table, Web Safe Colors, Human-friendly HSL
• Browser Tests: CSS3 Test, W3C CSS3 Validator, Web Page Test
• Code Playgrounds: Codepen, JSFiddle, CSS Deck, CSS Desk, Liveweave, JSBin, Dabblet, Plunker
• Code Snippets: Github Gists, Snipplr, Smipple, CSS{Pop}

Style Guides

• Airbnb:JavaScript Style Guide
• Apple Human Interface Guidelines: iOS, Mac OS X, Watch
• Google: Material Design
• Microsoft: Modern Design
• jQuery: JavaScript Style guide, HTML Markup Style Guide, CSS Style Guide

News / Forums / Q&A

• Medium, Quora, Hacker News, Reddit, Stack Overflow, Smashing Magazine

Web technologies

Tutorials

• Mozilla Developer Network
• reSRC
• codrops
• TheCodePlayer
• David Walsh Demos Tutorials

HTML

Tutorials

• MDN: Introduction to HTML
• Sitepoint: Basic Structure of a Web Page

References

• W3C: HTML Recommendation
• WHATWG: HTML Living Standard
• WHATWG: HTML Forms
• MDN: HTML5
• MDN: HTML element reference
• MDN: HTML Forms
• DevDocs: HTML

CSS

Tutorials

• CSS Tricks
• QuirksMode: CSS
• Eric Meyer: CSS
• CSS Mojo
• CSS Tips: Adobe Dreamweaver Team Blog
• Media Queries & Responsive Design
• CSS Flexbox
• Visual Guide to CSS3 Flexbox Properties

References

• W3C: Latest Stable CSS
• W3C: CSS current work
• MSDN: Cascading Style Sheets
• MDN: CSS3
• DevDocs: CSS
• DevDocs: Sass
• codrops: CSS Reference
• Adobe Edge Web Fonts
• Font Awesome

Articles

• A Complete Tutorial to Susy 2
• 16 Gorgeous Web Safe Fonts To Use With CSS
• I'm Excited About PostCSS

JavaScript Language

Tutorials

• MDN: A re-introduction to JS
• JS For Cats
• Programming JS Apps
• JS is sexy
• Human JS
• Eloquent JS
• You Don't Know JS
• Learn ES6

References

• Ecma-262 Edition 5.1, The ECMAScript Language Specification
• ECMAScript Language Specification ECMA-262 6th Edition DRAFT
• MSDN: JavaScript Fundamentals
• MSDN: Advanced JavaScript
• MDN: JavaScript
• DevDocs: JavaScript

Articles

• Eric Elliot: Essential JS Links
• JS 101
• Learn JS Essentials
• Self-invoking functions in JS

JavaScript Tools

References

• DevDocs: jQuery
• DevDocs: D3.js
• DevDocs: React
• DevDocs: Node
• DevDocs: Modernizr

Articles

• An introduction to D3.js Visualization Toolkit

Document Object Model

Tutorials

• Introducing the JS DOM

References

• W3C: DOM Level 3 Core
• MDN: DOM
• DevDocs: DOM
• DevDocs: DOM Events

Accessibility

References

• WAI-ARIA
• MSDN: Accessibility

APIs

References

• Google Maps, Docs,JavaScript API, Places API, Licensing,Code samples on GitHub, Stack Overflow
• Bing Maps, SDK, AJAX,REST, Stack Overflow, Bing Maps V7 SDK example

Gulp (The streaming build system)

Tutorials

• TUT

References

• Gulp Documentation

• Gulp Recipes

• Gulp.js cheatsheet

Articles

• Smashing Magazine - Building with Gulp

Jade (Node Template Engine)

Tutorials

• TUT

References

• REF

Articles

• An intro to Jade

Git

References

• Git homepage
• GitHub: Git Reference
• DevDocs: Git

Content Management Systems

Tutorials

• TUT

References

• REF

Articles

• ART