The promo code was still good just now ... not that I expect to find time to read through it any time soon :-) But the web page says "Fully updated to cover jQuery 1.4" -which isn't even released yet- so I guess it'll be current for a while.
Been there. Done that. Went back for more. But this time, I took this tiny ad with me:
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop