Here's a heads-up on the tutorial to be included with "Ajax Design Patterns". I�ll let you know when the tutorial text is available, but for now, the demos are running: Demos for the AjaxPatterns Tutorial.
The first half is a fairly standard intro to Ajax, using the Foundational Technologies patterns (Display Manipulation, Web Remoting, Dynamic Behaviour).
The second half is more interesting, as it documents the Ajaxification of Ajaxagram, an anagram finder (finds all combinations of a word, no dictionary used so as to keep the business logic simple).