Great camera, excellent lens. As noted the meter is not TTL, if you look at that beautiful photo of one, the metering is done through the small window at the top right corner of the camera. One thing to be aware of is that there is no on/off switch; if that window is uncovered the meter will be constantly registering light & running down the battery. It was intended to be kept in a camera case when not in use, if you don't have a case you might improvise something like I did, a strip of black elastic ribbon that covers the window when not in use.
The camera takes the old mercury batteries but works well with modern hearing batteries and some kind of spacer. The metering works in a couple of stages, first you look in the viewfinder window & there is a needle at the top that relates to an EV scale, eg the needle might point to 13. You then transfer this number to the lens, where the aperture & shutter settings are next to each other with a tiny window that shows the EV. So in this case you'd adjust the shutter and/or aperture until 13 showed in the window as your starting point. This works perfectly well but if you have a hand held meter you might find it just as easy and not have to bother with the batteries.