It could take a week to completely dry out the camera.

Open the battery compartment and remove the batteries.
Remove the memory Card.

Open every door on the camera that you can find.

Sit the camera on a sunny window sill (lens facing away from the sun).

Let it set there for a week before even trying to use it.

...........

One week later.
Clean the battery contacts on the battery and the battery contacts in the camera.
Clean the contacts on the memory card.

Install battery and memory card.
Cross your fingers.
Turn the camera on.