The World Wide Web Consortium (a.k.a. W3C) at http://www.w3.org provides a good resource - standards, (X)HTML validation and more.
Online W3C Tutorials can be found here: www.w3schools.com
The World Wide Web Consortium (a.k.a. W3C) at http://www.w3.org provides a good resource - standards, (X)HTML validation and more.
Online W3C Tutorials can be found here: www.w3schools.com