Ajax: A good introduction

If you have not yet heard of AJAX (combination of HTML, JavaScript, DHTML, and DOM) or if you have but have not gotten started working with it, this is an excellent series to get you in the know, as well as begin to get started with it if you are ready for the next big thing in interactive development. This is the most important new direction in developing web applications and it has already proven to be very positive for the industry. Even if you are not attracted to the scripting side of development, you need to read about AJAX and understand the possibilities it offers the developer. Thanks to Stephen Downes for referencing the articles!

Mastering Ajax, Part 1: Introduction to Ajax
http://www-128.ibm.com/developerworks/web/library/wa-ajaxintro1.html

Mastering Ajax, Part 2: Make asynchronous requests with JavaScript and Ajax
http://www-128.ibm.com/developerworks/web/library/wa-ajaxintro2/

Mastering Ajax, Part 3: Advanced requests and responses in Ajax
http://www-128.ibm.com/developerworks/web/library/wa-ajaxintro3/?ca=dgr-lnxw01MasterAJAX3