The Business Benefits of Web Standards - light reading.
W3: List of valid DTDs - use 'em.
Digital Web Magazine: Web Page Reconstruction with CSS.
"Welcome to the Minimalist Web project. This is a collection of good-looking websites that are built with minimalism in mind, the idea of beauty through 'less is more'."
"Java and plugins are so last decade. I don't use either." - Ian "Hixie" Hickson.
Developing Schemas for the Location of Common Web Objects - or "Where do people expect stuff to be?"
Mozillas DOM inspector is a good tool when developing HTML-pages.
boxesandarrows - "Boxes and Arrows is the definitive source for the complex task of bringing architecture and design to the digital landscape." - good thing they're not overconfident.