HTML Reference

General HTML FAQs

HTML 3.2 Reference: Great reference from the Web Design Group (WDG) - highly recommended! Each element has its own page, and each page shows you what the element can contain, and what it can be contained in.
Learning HTML 3.2 by Examples: A very nice, basic tutorial covering HTML 3.2. Shows examples, which many people have an easier time learning from.
Introducing HTML 3.2: The official recommendation, straight from the World Wide Web Consortium (W3C).

In the Web course, we teach HTML 3.2. However, you are always free to use a higher standard, such as HTML 4.0, if you need or want to.

HTML 4.0 Reference: Very complete resource from the WDG. Highly recommended.
HTML 4.0 Specification from the W3C: The latest HTML recommendation from the W3C.
Quick Index to HTML 4.0: Jukka Korpela has created a more user-friendly way to get to the W3C's HTML 4.0 recommendation.

This is just a working draft, so this is only really for the folks who need to be on the cutting edge of HTML development.

XHTML 1.0 Working Draft from the W3C: HTML reformulated as an XML application. Geeky cool!