Originally Posted by BigBen

http://prototype.conio.net/
http://www-128.ibm.com/developerwork...Mastering+Ajax
http://www-128.ibm.com/developerwork...matters41.html
http://www-128.ibm.com/developerwork...matters41.html
http://www.phpbuilder.com/columns/kassemi20050606.php3
http://www.interspire.com/content/ar...-Uses-For-AJAX
http://ajax.phpmagazine.net/2005/09/..._with_php.html
http://particletree.com/features/the...gradable-ajax/
http://www.onlamp.com/pub/a/onlamp/2...tprequest.html

Should be a good start. I've been using ajax for a number of internal controls and it works great.