HTML vs. XHTML
There are no new elements in XHTML. So, you won't have to learn a whole new set of tags.
XHTML is essentially the same as using HTML and following five rules that are based on the XML standards. XML has all customized elements. In order to keep track of everything XML has specific rules so the data is clear and unambiguous (Unambiguous means there is only one option.)
You will be surprised to discover that several of these rules you already know!
