There's really nothing difficult about it. If you're not familiar with using manual lenses, here's what the Peleng site says:
Working with M42 lenses acknowledgement of the focusing with green light is not made. The aperture is set «0.0». Expo-modes:
1. P (program) – identical to Av mode;
2. Tv (flash priority) – doesn’t work;
3. Av (diaphragm priority) – works as usual;
4. M (manual) – aperture and flash are changed. Inaccuracy of exposure defining is indicated by expo-correction.
All this sounds like a lot, but the basic is the same as other manual lenses. Use the AV setting, and you'll set your f/stop by hand. Then the camera will automatically select the appropriate shutter speed for you. If your images are blurred, it's probably because either:
1. the shutter speed is too slow or
2. you didn't manually focus.
Focus, and open the lens up (change your f/stop) until the camera sets a speed you can hand hold, or raise your ISO to compensate.
When you get some shots posted, please let us know.