Creating web pages is an arcane science. Though purely technical in nature, it is astounding how a little artistic talent can transform a web page from technically perfect to subtly appealing. I'm afraid I can't help you much with subtly, but I have found several resources to get you started. If you find a web site that can instill artistic vision... let me know.

No webpage is complete without bullets: My bullet collection.
And don't forget about buttons: My button collection.
Master text colors with my color code reference page.

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HTML
I learned web publishing by studying A Beginner's Guide to HTML.
An advanced guide of tricks & tips: How Do They Do That With HTML?
You can find a lot of good data at the World Wide Web Consortium.
CSS
An excellent beginners guide to CSS is Lissa Explains it All: CSS Tutorial.
W3Schools hass many good tutorials, including CSS.
The definitive reference for CSS is w3.org: Cascading Style Sheets, level 1.
XML
Multiple platform access is the goal of XHTML 1.0.
W3Schools hass many good tutorials, including XML.
Scripting
A good source for javascript is Dynamic Drive.