In this section, I list interesting Software Development code samples and articles that have proven valuable learning tools.

CSS

http://adactio.com/articles/1109//1 - This is the best introductory article on CSS web design ever.

How to lay out a page using CSS, divided in 3 columns.
More CSS lay out techniques.

Design

Garr Reynolds/Design Basics.

SQL

Saving and Retrieving Binary Files With SQL Server.