I agree that you should use the camera's metering rather than guessing for your exposures. I'm also confused as to why you'd want over-exposed images. There's a difference between what is called high-key and just blown whites.
The camera takes a couple of button batteries that are still very common and easy to obtain. You can put it on P, which on a modern camera amounts to full-auto, the camera decides both aperture and shutter speed for you. You can shoot aperture-priority automatic, where you set the lens aperture and the camera sets the shutter speed. You can also shoot fully manual by setting both aperture and shutter speed. The meter in the viewfinder shows the aperture you've set and the shutter speed it would use if it was setting it. You have to take your eye out of the viewfinder and look at the top of the camera to set the shutter dial, which seems cumbersome. Once metered, though, if light conditions don't change, you can shoot without further consideration.
Don't forget to set the film speed on the dial on the top left side of the camera. That tells the meter what film you're using so it adjusts exposure correctly.
The Sunny 16 rule basically says 1/ASA at f:16, so with ASA 200 film, you'd want 1/200. The closest the camera has is probably 1/250, but if it's not sunny, you'll be guessing until you've had some experience exposing for dimmer conditions, like cloudy, heavy overcast, or dusk.