Guess I am a little slow finding some sites... htmldog.com and the Sons of Suckerfish -- CSS Menus.

About HTML Dog

HTML Dog is a guide and resource, for beginners and experts alike, to the most commonly used technologies in making web pages - HTML and CSS.

There are six Guides in three categories - Beginner, Intermediate and Advanced.

The Beginner's Guides (HTML Beginner's Guide and CSS Beginner's Guide) are step-by-step tutorials for those who have no previous knowledge of web design and should serve as a general introduction to the basics.

The Intermediate Guides (HTML Intermediate Guide and CSS Intermediate Guide) are bits and pieces that may interest the novice and expert - they include the next-step of features on from the Beginner's Guides, but may also contain information that advanced users are unaware of.

The Advanced Guides (HTML Advanced Guide and CSS Advanced Guide) include various subject areas, exploring the exploitation of HTML and CSS to their full accessible, low-bandwidth, feature-rich potential.

HTML Dog is still a puppy and will grow in the future with more articles, features and reference resources.