I finally bought a bike.
I've been telling myself I would get a bike for more than a year. I finally overcame the inertia and found a good one on craigslist.
I brought it to Sopo Bikes and I learned how to patch and change a tire, along with some basic maintenance stuff. When I got it back home, I rode it to the nearby grocery store to pick up a few things.
My goal is to eventually be able to use the bike instead of a car for most trips. We'll see how it goes.
I need to extend a hearty thank-you to all the people who offered me advice and help as I started my search: Thanks UHX folks and the others who let me bug them via e-mail.