Here is some information for all you web developing librarians.

(Courtsey of Library Web Chic)
Librarian Way has a good post, Learning to Use CSS. It lists CSS resources and tutorials.
Some Resource Links mentioned are:
W3Schools- web design tutorial in general, materials on XHTML, CSS, ASP, XML, PHP etc.
EchoEcho.com -web developement design and tutorials
A List Apart-CSS articles and tutorials
Eric Meyer-collection CSS-driven design demos
CSS ZenGarden - clean design through CSS
Glish.com -CSS layout techniquesis fun to do this with.

CSS can be a bit tricky when first learning it. It is always helpful to have an HTML and CSS editor to help you create your pages. However, once you have gotten a taste of what a little CSS can do for designing and styling your pages, you will be hooked.