Here are links to some resources from the CSS Summit presented by Environments for Humans.
Denise Jacobs: Advanced CSS Troubleshooting
Here is a list of resources Denise provided at the end of her presentation:
http://delicious.com/denisejacobs/csssummit2010?setcount=100
Chris Eppstein: CSS with SASS, SCSS & Compass
I’ve used LESS, and SASS offers many of the same features. I’m actually not sure how they differ. LESS and CSS give you a way to write less css by using variables and mix-ins. My first pass with LESS resulted in some very verbose stylesheets, so I’m in the midst of refactoring the CSS I’ve already written. I do think these things have a place, and can be time-savers, but should be used sparingly.
