Books I recommend

PHP & MySQL

• Beginning PHP5 and MySQL5 - From Novice to Professional-2e-2006-APress
• Professional Ajax Php
• Professional LAMP - Linux, Apache, MySQL, & PHP5 Web Development (2006)
  

Javascript

• Javascript Bible 4th Edition
• O'reilly - Javascript - The Definitive Guide, 4th Edition
  

Ajax


HTML, XML and others -ML

• OReilly XML Pocket Reference 2nd