W3C – Introduction To HTML

The World Wide Web Consortium (W3C) develops interoperable technologies (specifications, guidelines, software, and tools) to lead the Web to its full potential. W3C is a forum for information, commerce, communication, and collective understanding. They are the "rule makers" for HTML. Here is the general tutorial from their site. It is an excellent series of articles and tutorials that, among other things, steps you through the use of basic HTML to build a web page. Note, however, that much content on the site has not been updated since 2003 and some changes to HTML since then are not covered. For example:

• All tags need to be closed either with the associated end tag or internally.
• Single tags, without an associated end tag, like <img />, <br />, and <hr />, must be closed internally.
• All tag and attribute names must be in lower case.