XHTML

» W3C HTML Home Page
   The W3C's HTML website, including information about HTML and XHTML.
   http://www.w3.org/MarkUp/

» Marking up documents in XHTML
   The HTML Writers Guild article, detailing the main differences between HTML and XHTML.

   
   http://gutenberg.hwg.org/markupXHTML.html

» NYPL Styleguide
   XHTML 1.0 overview. Includes discussion of accessibility and document validation. Also XHTML authoring tips and tools featuring the use of Dreamweaver.

   
   http://www.nypl.org/styleguide/xhtml/

» New Architect
   Article exploring the issues involved in migrating from HTML to XML.

   
   http://www.ddj.com/architect/184413727

» XHTML :: How to succeed
   Tips and caveats on HTML to XHTML migration for existing browsers.

   
   http://ptaff.ca/xhtml/?lang=en_CA

» XHTML Reference
   An XHTML reference with articles describing HTML-compatibility.

   
   http://xhtml.com/

» XHTML Web Design for Beginners
   An introductory article for those with no prior experience of HTML. Covers version 1.0 Transitional.

   
   http://www.miswebdesign.com/resources/articles/web-design-xhtml-1-1.html

» XHTML is the Most Important XML Vocabulary
   An article covering possible future outcomes for version 2 of the standard.

   
   http://www.xml.com/pub/a/2003/05/21/deviant.html

» XHTML: Where XML and HTML meet
   Discussion of XHTML 1.0 and how it improves on the HTML 4.0 standard. Examines the issues involved in the transition between HTML and XHTML. Also explores backwards compatibility to HTML and XHTML modularization.

   
   http://www.webreference.com/xml/column6/