Norman Koren walks you through the basics.
A while back, I got ahold of a Tamron CF Tele-Macro 80-210mm f/3.8-4. It was my first experience with a Tamron Adaptall-2 lens.
I like the lens. The bokeh's a little harsh, but it's very sharp, built like a tank, and can focus down to just under a meter. However: It came with a plain-Jane Pentax K adaptor.
I found another Olympus XA-series camera at a thrift store for $3 (marked $5.99, half-off sale day). Of course, it's an XA1, which is the fixed-focus selenium-meter version. It's got the quality D-Zuiko optics, but it's more like an instamatic than its rangefinder XA brethren.