Just shoot with it and enjoy the best compact rf ever 😉
On serious note, if you don't have a battery then look for air-sinc batteries for it (PX625). Metering in my camera is spot on so automatic aperature is usable if you like that sort of things. I use mine on manual, always, out of a habbit I guess. Besides I mostly don't have a battery installed but use sunny-16 or handheld meter in difficult situations.
Just load it (and enjoy the easy loading that no other maker in my experience can touch) and shoot with it.