Here is a list of useful books found in the city library, that have websites and tutorial offerings for download. I’ll keep updating the same post as more good books are found on the shelves.

Transcending CSS by Andy Clarke

Here are a selection of sites offering free CSS template downloads.
Free CSS Templates
Open Source Web Design
Open Web Design

Some of the individual contributors to the sites above are listed here:
D Carter
NodeThirtyThree
Solucija

A List Apart:
Lots of topics to browse. Check out the home sites for the contributors to this site.

Blue Robot:
This site has not been updated in quite a while, but there are some basic layout codes that might be useful to some.

CSS Play:This sexagenarian web coder has created the most amazing features using CSS code. Best of all, he very generously allows free use of his code (although it’s always polite to link to his site if you do use some). It can be a little tricky to copy & change the code to suit yourself, but it’s well worth the effort.

Dynamic Drive:
There is a ‘CSS Library’ section to this site which has some clever MENU and image arranging code.

Plough Deep:
I found some interesting DROP SHADOW coding on this site.

Simple Bits:
Dan Cederholm has written (both in book & online form) some good coding information.
Here is his site:
http://www.simplebits.com/
He also contributes to the Web Standards Group:
http://webstandardsgroup.org/features/dan-cederholm.cfm

Stop Design:
Douglas Bowman has written (both in book & online form) some good coding information.
Here are a couple of his sites:
http://www.stopdesign.com/
http://www.dbowman.com/

Wikipedia / Web colours:
For colours beyond the usual ones, scroll down this page to view colours & alpha-numeric codes.
http://en.wikipedia.org/wiki/Web_colors