Need Advice on how to use an old camera

Hello everyone, I bought an old Kodak Retinette 1A in a fleamarket. It seems to be in working condition, although I'll only know for sure after I developed the first photos. I found a manual for a later version (or a different one, the manual is in English and the camera is from Germany) but the lense and the labeling on the lenses are very different from mine.

I was hoping maybe someone with more knowledge of photography could help me make an educated guess. I assume the part labelled with an "m" is distance in meter, but otherwise I have no clue.

Update: Unfortunately the developed Film came out empty, so either I made a terrible mistake or the camera is broken :(