• What is XHTML?
  XHTML (Extensible HyperText Markup Language) is the "XML-ization of HTML"—essentially the "newest version" of HTML, which extends its functionality to support a wider range of devices and applications.
  
  Official W3C XHTML 1.0 Specification is here.
  
  XHTML 1.1 - Module Based XHTML (W3C Recommendation).
  
  Modularization of XHTML^™ W3C Recommendation.

We'll be adding new sections here soon. Till then enjoy the following articles.

• XHTML Tutorial


• Introduction to XHTML, with eXamples


• XHTML.ORG: XHTML Informational Web site


• Learn Something New, Issue 6: XHTML


• How XHTML Will Reduce Your Coding Tasks--Today!


• Converting HTML to XHTML  
  
  


• Sample chapter from book XHTML (New Riders)


• Sample chapter from Beginning XHTML (Wrox Press)


• XHTML The Best of Two Languages?


• XHTML Technetcast (52 minutes)


• XHTML Tutorial : Seven Days to Standardized Success
  Day One: What is XHTML?
  Day Two: HTML: Why Not Just Wear Your Father's HTML?
  Day Three: XHTML 1.0: Logic and Reason
  Day Four: Reformulating HTML into an XML Application
  Day Five: More About DTDs
  Day Six: Well-Formedness and Syntactical Rules in XHTML 1.0
  Day Seven: The Future of XHTML
  


• XML and Extending XHTML