I disagree, you can put on better habits from the start by using xhtml, xhtml is barely (if at all) harder than html.
Liberator, make the site more exciting I say, even a few colours help. I recommend you start with tables, as they can look rather good without too much effort (and you can organize data much better). Just don't use bright/plain colours, try various borders (I prefer no borders, simple line borders, or dashed borders), as for a title, an informative title is recommended. (Or at least, an attention getting title, followed by an explanation) It took me a bit to realize that was a homeworld related tc.
About colour scheme, I think it's easier to make a good looking colour scheme if you stick to similar colours. For example, lots of blues together look good, as do greens together and reds together (not red+green, that sucks). Just be careful with using colours that are too similar.