How close is this relative . . .
Very simple camera. See link for manual -> FM2 manual
Put batteries, compare meter readings to a known good reference - varying shutter speed and aperture settings. Put in 'B' mode and fire the shutter varying the lens aperture and check to see it changes accordingly. Listen for differences using different shutter speeds. Fire a flash - on and off camera. Check viewfinder so that you can see clearly. Use the self timer - raises the mirror prior to firing the shutter. If everything works then try it with film. Good luck.