First of all, Responsive Web Design by Ethan Marcotte is a very good quick-start handbook (less than 300 pages) that suitable for readers who have certain CSS basics. When finish it, you will suddenly become extensive and know the responsive web design at your finger's tips from feeling very mysterious about it.

PHP 5 Power Programming is a classic must-read authoritative book with 720 pages of content published in 2004, cooperatively written by 3 PHP masters (PHP 5's chief designer - Andi Gutmans, PEAR's founder - Stig Saether Bakken and PHP's core contributor - Derick Rethans). Now its full copyright has been completely free.

As an intelligent PHP IDE and code editor from Denmark, phpDesigner is very fast, powerful and stable. That means not only is it suitable for PHP programming, but also can be used for other web developments primarily based on HTML, CSS and JavaScript. Its main design purpose is to speed up your programming, and make you feel easier in the whole process. However, for this very reason, it is more inclined to beginners.

Now, all modern browsers have supported HTML5. Therefore, this is the top priority for each web designer & developer to study and start using HTML5 as soon as possible, in order to enjoy the convenient, fast and powerful functions it brought to web development.

HTML5 & CSS3 Visual QuickStart Guide is one of the best introductory series of books for HTML & CSS sweeping around the world. It has been translated into 10+ languages, and become the bestseller in the fields of web design & development in many countries.