Question about Yunost camera

Hello
I took the old Yunost camera from the shelf and now I don't remember how to open it to load some film. So here are some basic questions:

The sliding button in the bottom shoud be in the "0" or in the "3" position ??

The back cover is completely removed or does it has some hinge? If it has, in which side of the camera is it placed ??

Thank you in advance for instructions. I am reluctant in using brute force to open the camera...

Regards
Joao

meu amigo Joao
Go to https://cameraventures.com/gomz-junost-yunost-en
and see how easy it is.
Nurn the milled borrom knob and move laterally
the complete bacck comes out!
Saudaзхes do Brasil
LP

I've never heard of Yunost cameras. I've just looked on the soviet camera site and it says that the shutter speed and aperture are linked. Can they be altered seperately?