Which to use: HTML or XHTML or XML?

[freedom1313fighter]

I know HTML4.0, but have heard that XHTML and XML are going to be the slow but steady "wave of the future internet". I want to code a website but am not sure which to use, nor which ones are the most browser compatible or which is more versatile.I know HTML4.0, but have heard that XHTML and XML are going to be the slow but steady "wave of the future internet". I want to code a website but am not sure which to use, nor which ones are the most browser compatible or which is more versatile.***Added details: I am familiar with HTML and CSS, I'm not ignorant on that, I just want other's opinions on which of the three would be best for using at this point, as I have read up on the XHTML and XML, but really am not sure which one is more suited for both casual and business websites.***Added details: I am familiar with HTML and CSS, I'm not ignorant on that, I just want other's opinions on which of the three would be best for using at this point, as I have read up on the XHTML and XML, but really am not sure which one is more suited for both casual and business websites.

[cdy_cambell]

i use html but xml is just as good i think

[molave]

Learn about XHTML and CSS. No need for XML at your level.

[zamnedix]

If you are just starting out, you probably want to use HTML and CSS first. Afterwards, if you're feeling comfortable with a bit more, check out XHTML and XML.