20 Amazing jQuery Plugins and 65 Excellent jQuery Resources

The definitive collection of jQuery resources

Collection of AJAX Resources

A great collection of AJAX resources. Has everything that one might need.

Useful Ajax Resource

Suggested by Rahul

www.ajaxrain.com

A number of readymade scripts are available here.

JQuery Crash Course

A one page course on JQuery with many useful links.

http://www.digital-web.com/articles/jquery_crash_course/

Useful Articles on Programming

A collection of extremely useful articles on Programming. If possible, read all of them.

Useful articles and links
Useful articles and links 2
Useful articles and links 3
Useful articles and links 4
Useful articles and links 5

Ajax Resources

http://www.smashingmagazine.com/2007/06/20/ajax-javascript-solutions-for-professional-coding/