Tim:
For loading the Zorki-1, see
http://jay.fedka.com/index_files/Page345.htm
it's just like loading any bottom-loader Leica or Canon.
When taking of the lens from a Zorki-1 or any FSU LTM RF like the FED or any later Zorki,
make sure that you set the lens first to minimum focus before unscrewing the mount. This is to prevent the (adjustable!) rf sensor from getting upset from undue force or movement.
That site should help you with Zorki-1 questions, including testing and calibrating the camera's focus accuracy. This is serious issue with many Zorki and FED cameras.
Jay