For anybody interested, I’m just about done with lining up the data models behind Movable Type (2.64) and WordPress (0.71) to see how the import can work. The rest of it should be just going through the motions of moving the data. There are a couple of outstanding design decisions, like what to do about older versions of MT (i.e., how far is the import backwards-compatible?) and what to do about versions of MT on Berkeley DB (i.e., use MT upgrade scripts to move to MySQL or pull in the MT export format?). If you have thoughts, feel free to email me or open it up in the forums.
Also, while Matt and others much more versed in CSS might have better suggestions, I’m a fan of the tutorials at w3schools. It’s been easy for me to find what I’m looking for as a reference there.