How to use OLYMPUS PEN-D 1960s half frame camera

Olympus
Lens shutter type 35mm half-size camera
It is the basic use of the pen D.
specification
Lens: F.Zuiko / F1.9
Shutter speed: B · 1/8 seconds to 1/500 seconds
Size: 108 × 67 × 50mm
Weight: about 420g
Battery: selenium photocell (battery is not required)