I had stumbled across this video a while ago playing with some jQuery stuff. I had forgotten about it but wanted to update some stuff I had done a while ago with Spry and switch it over to jQuery just to pad my resume a bit :D
Here's the link to the video tutorial:
http://www.youtube.com/watch?v=JB6MIV_lHI0
That technique makes learning/debugging jQuery really quick and painless.
Also, understanding how to use the Console in Firebug really helped me debug some crazy javascript issues I was having with a CMS a while ago. Well worth exploring and playing around with a bit.
I ownZ the internet3!
Sorry for the lack of linkage above:
http://www.youtube.com/watch?v=JB6MIV_lHI0