Getting started with HTML by Dave Raggett is a short introduction to writing HTML, including tutorials on advanced features.
Styling Your First PagehtmlDog - Beginning CSS
Links to CSS help, from basics to advanced
Expression Web - Microsoft
by Expression - by Cheryl D Wise
Any Expression - by Tina Clarke
First Expression - some hint files and a few videos including .NET
Rachael Andrew on Expression Web - not much but a few good points