如何在线学习Ajax基础知识？

我对Ajax技术非常陌生，有什么网站或在线文档可以让我学习ColdFusion的Ajax基础知识吗？

Using Ajax UI Components and Features

Using Ajax Data and Development Features

And also Ben Forta

http://www.forta.com/blog/

(search for "coldfusion ajax tutorial", there's a series of 7)

and Ray Camden's blog

http://www.coldfusionjedi.com/

Here is a video tutorial I did for Adobe.TV on the built-in AJAX functionality in ColdFusion.