There’s a new site offering some Ajax help for everyone out there, from beginner to pro - AjaxLessons.com.
It calls itself a “resource for ajax tutorials as well as information surrounding Ajax and web 2.0″.

The site aggregates some of the better Ajax-related tutorials and information out there. So far, they have a few tutorials, some 
news items, information about some of the trends in web design,
and a contest they’re sponsoring to give away three Ajax books (”Ajax in Action”, “Foundations of Ajax”, and “Professional Ajax”).

One interesting feature of the site is the Ajax “Workshop” they’ve created - this time its a detailed look at the basics behind performing
email verfication with the Prototype library.