OK, so a few days ago I said I was looking forward to seeing what Part 2 of this series would bring, and here it is:

http://dotnetslackers.com/articles/ajax/JQuery-Primer-Part-2.aspx

This one's a quick jump up from the more basic stuff that Part 1 had, taking you right to creating a plugin to show how to extend jquery.

[2 cents] Very nice primer on creating a plugin. Steps you nicely into best practices (very similar to what we used for our listnav plugin). Quite a step up from the more basic stuff in Part 1.