This is a small collection of some excellent resources and examples of both xhtml and css at work. This list has been compiled by Chris Jones & Greg Prosser. Further additions to list to include good reads.
» http://devedge.netscape.com/
» http://www.globeandmail.com/
» http://www.iht.com/frontpage.html/
» http://www.lambertin-grotegerd.de/
» http://www.nypl.org/styleguide/
» http://www.souloftheweb.com/
» http://www.alistapart.com/stories/indexHTMLXHTML.html
» http://www.csszengarden.com/
» http://www.mozilla.org/docs/web-developer/upgrade_2.html
» http://www.sitepoint.com/subcat/88
» http://www.w3.org/TR/xhtml1/
» http://www.w3schools.com/xhtml/xhtml_html.asp
» http://www.webreference.com/new/road2xhtml.html
» http://www.nickfinck.com/presentations/stc/
» http://www.nypl.org/styleguide/xhtml/benefits.html
» http://www.webstandards.org/
» http://bobby.watchfire.com/bobby/html/en/index.jsp
» http://jigsaw.w3.org/css-validator/validator-uri.html