[Discover] World Wide Web Consortium http://www.w3.org/ (reference tutorial css html)
 [Discover] The W3C Markup Validation Service http://validator.w3.org/ (validator validation html xhtml)
 [Discover] The W3C CSS Validation Service http://jigsaw.w3.org/css-validator/ (css tools validation seo)
 [Discover] W3C Technical Reports and Publications http://www.w3.org/TR/ (standards reference spec xml)
 [Discover] W3C HTML Home Page http://www.w3.org/MarkUp/#tutorials (html tutorial webtools webd)
 [Discover] HTML Tidy Project Page http://tidy.sourceforge.net/ (tidy programming xhtml free)
 [Discover] W3C QA - Buy standards compliant Web sites http://www.w3.org/QA/2002/07/WebAgency-Requirements (standards reference webstandards accessibility)
 [Discover] Web Browser Standards Support Summary http://www.webdevout.net/browser-support-summary (browser css html reference)
 [Discover] W3C HTML Working Group http://www.w3.org/html/wg/ (standards html development xhtml)
 [Discover] XML Events for HTML Authors http://www.w3.org/MarkUp/2004/xmlevents-for-html-authors (xml development browser javascript)
 [Discover] HTML 5 differences from HTML 4 http://dev.w3.org/cvsweb/%7Echeckout%7E/html5/html4-differences/Overview.html (standards html browser code)
 [Discover] Architecture of the World Wide Web, Volume One http://www.w3.org/TR/webarch/ (architecture rest www standards)
 [Discover] Checklist of Checkpoints for Web Content Accessibility Guidelines 1.0 http://www.w3.org/TR/WCAG10/full-checklist.html (accessibility standards webdev checklist)
 [Discover] A Little History of the World Wide Web http://www.w3.org/History.html (history hypertext reference timeline)
 [Discover] About W3C: History http://www.w3.org/Consortium/history (history search interesting research)
 [Discover] W3C Math Home http://www.w3.org/Math/ (xml mathematics math reference)