I was researching installation instructions for Movable Type, and I got a little off track. I came across this resource for "Free drop-in styles for Movable Type" over at Style Monkey.
I couldn't easily figure out the monkey's name to give the author credit. If you stop by you may want to wish them encouragement on their impending graduation from college while you grab a style sheet to use with the default Movable Type version 3 templates.
I recommend beginning MT bloggers start out with the default templates. They are a good starting point for semantic markup of entries. You can build templates from scratch as I have several times, but even on those occasions I used snips of code directly from the default templates.