Hi there. I've been on this site for four months trying to fill it with all the information possible referred to the HTML standard. The information was mainly obtained from the World Wide Web Consortium recommendations, organization that actually sets the standards for HTML, CSS, XHTML and many more. All this information have been adapted to a basic language given that the W3C recommendations are written in a high level language difficult to understand and in many cases the specifications are defined to be applied in several non HTML codes (e.g. Cascading Style Sheets). As a result of this we obtain a site simple and easy to understand (with tutorials, examples and references) that covers all the characteristics of the language. The whole site has been built based on my experience on the Internet.
The general idea is that people should learn to write HTML code according to the latest standards recommended by the W3C that are designed to reach everyone. To achieve this we always recommend to fit the standards and use the abandoned attributes that may not represent any visual feature but makes a lot of sense for people with disabilities or poor technologies.
As you may have seen, we proudly show at the bottom of every page the W3C images of "Valid XHTML 1.0 Strict" and "Valid CSS", which means that we take care to write our code carefully to fit the standard. This not only shows an image, but also let you follow the link to the W3C validator, which will tell you if the code is really correct. We also show the image for Level Triple-A Conformance, W3C-WAI Web Content Accessibility Guidelines 1.0, which means we go further and try to make a web more accessible for everybody.
I hope you find this information useful and learn from it. Thank you for being there...
Diego Ponce de León