Web Applications Development - Useful Resources
HTML/CSS
Websites
A Beginners Guide to HTML & CSS by Shay Howe
HTML Dog by Patrick Griffiths
Sitepoint
Sitepoint HTML/CSS Beginners Guide
Tuts Plus
Team Treehouse
Dive into HTML5
HTML5 Please
Scalable and Modular Architecture for CSS by Jonathan Snook
Code Racer
HTML5 Boilerplate
Twitter Bootstrap
Foundation
Blueprint CSS
Books
HTML Dog by Patrick Griffiths
Build Your Own Website the Right Way Using HTML & CSS, Third Edition by Ian Lloyd
HTML5 & CSS3 Visual QuickStart Guide, 7th Edition by Elizabeth Castro & Bruce Hyslop
CSS3: Visual QuickStart Guide, 5th Edition by Jason Cranford Teague
JavaScript
Websites
Eloquent JavaScript by Marijn Haverbeke
Code Academy
JQuery Fundamentals by Rebecca Murphy
Books
Simply JavaScript by Kevin Yank & Cameron Adams
JavaScript: Visual QuickStart Guide, 8th Edition by Tom Negrino, Dori Smith
jQuery: Novice to Ninja by Earle Castledine & Craig Sharkie
jQuery: Visual QuickStart Guide by Steven Holzner
PHP/MySQL
Websites
Practical PHP
MySQL Tutorials
Books
PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide, 4th Edition by Larry Ullman
PHP for the Web: Visual QuickStart Guide, 4th Edition by Larry Ullman
SQL: Visual QuickStart Guide, 3rd Edition by Chris Fehily
General
Websites
A list apart
Move the web forward
Isobar Web Standards
Tait Ems Web Standards
Special Moves Web Standards
CSS Wizardry Web Standards
Books
Designing with Web Standards by Jeffrey Zeldman
Testing
Dabblet
jsFiddle