Here's a nice little movie on letterpress printing. All because John Nack mentioned The Elements of Typographic Style Applied to the Web, which he got from Drawn's Web Typography Sucks, which linked to kottke.org.
The Bay Area is a thriving center for small press and the art of bookbinding. You can take letterpress workshops at The San Francisco Center for the Book, which also has a Bookarts Users Group. Another fun resource is Paper Source, with workshop stores in Northern and Southern California and across the country.