#4 Keep Your Camera Dry
One of the #1 camera if not all electronics killers is moisture. Many of today’s cameras have weatherproofing but this is not something you should rely upon. When storing your gear you can use Silica Gel Packets Desiccant Dehumidifiers. These are the same kinds of packets you’ll find many times in the battery compartments of new electronic devices or in a medication like aspirin. You can throw a few in your camera bag.
Also, if you know you’re going to be shooting in a wet environment make sure to wrap you camera up. I keep rainsleeves in my camera bag. You could use a ziploc bag to do the same thing but I prefer these. They are built specifically for a camera and they even have a compartment built in for an attached external flash.