I stumbled upon these jQuery developer tips. I really don't understand much of them myself, but they look very handy nevertheless, so I thought I'd share the links:
http://www.tvidesign.co.uk/blog/improve-your-jquery-25-excellent-tips.aspx
http://www.tripwiremagazine.com/2010/04/24-irresistible-jquery-tips-to-power-up-your-javascript-skills.html
Thanks for sharing, Argos. :-)