I would also recommend that you check out:
Their free course on CCS Level 1 is just ending but CSS Level 2 will be starting in 2 weeks. CSS2 incorporates all of CSS1 and then takes you beyond.
You might also take a look at Dave Raggett's site:
Can't help myself, but if you don't already have a good HTML editor, try HTML KIt. Best of all, it's free! Includes a great validator, FTP tool, among lots of other goodies. Get it at:
I'm a newbie who recently migrated from FrontPage, and I love my HTML Kit editor. I stay in control and my code stays standards compliant.
Another wonderful site where you can pick up all sorts of wonderful CSS tips is: