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lol looks like you started off alittle backwords imo.
I learned web programming because that's what I was into. I haven't had any interest in computer programming until mobile environments like the iPhone got popular.
HTML is still quite valid. XHTML isn't really necessary unless you're utilizing the XML aspect of it quite a bit. HTML 4.0 and XHTML 1.0/1.1 are all still widely used and relevant, and HTML5 is coming up fast.