I have a pretty basic understanding of HTML and can get by using online resources. I am currently teaching myself PHP, but had goals to learn other languages afterwards.

I wanted to learn:
-CSS, XML, Javascript, MySQL

I also want to learn how to master HTML. I came across the term DHTML and thought that it would be perfect to master DHTML as, according to http://webdesign.about.com/cs/dynami...a/aa030298.htm, DHTML combines CSS, HTML, and XHTML.

Is this true? Can I, by learning "DHTML", master HTML, XHTML, CSS, and some Javascript? If so, what are some good books to learn this combo language.