I have spend loads of time surfing the internet for information on building websites 'the right way'. These links have proven to be very useful.
www.htmldog.com
A great site with a nice introduction to CSS and HTML.
colourchart
A handy colourchart making an easy job of finetuning the use of colour on your website.
css property index
This site is very useful as a reference work, especially the css property index.
www.handleidinghtml.nl
A fantastic reference work for html and css!
www.chami.com
A free and simple but effective html editor: html kit.