Great series on AJAX
OK, so you’re checking out Atlas, or DWR, or Rico, or Dojo, or the built in Ruby on Rails/AJAX support, etc., but some day, as is the case with almost all experiences with all 3rd-party “we hide the complexities from you” components, you’re probably going to have to do dive into the underbellies of AJAX that are Javascript, XMLHttpRequest, DOM, etc. If/when you do this is a great series to follow.
http://www-128.ibm.com/developerworks/web/library/wa-ajaxintro1.html
http://www-128.ibm.com/developerworks/web/library/wa-ajaxintro2/?ca=dgr-wikiaMasterAJAX2
http://www-128.ibm.com/developerworks/web/library/wa-ajaxintro3/?ca=dgr-wikiaMasterAJAX3
