I started changing my oil at the beginning of storage a few years ago. If I'm under 500 miles though I let it go. Run my car and fill up the gas tank first, so that the oil is nice and hot before the change. After the oil change I fire it up and shut it down after the oil is primed.

Last tank fill up is non-ethonal gas with some stabilizer which is more for the carb. than the tank.

Put the car on jack stands and disconnect the battery.

I have 5 cars so I move a battery tender once a month between the cars.

Since I have a heated garage I don't do anything for moisture control. Like fogging the engine or putting charcoal in pie pans in the interior, trunk, and putting a bunch of cardboard under the car and in the engine compartment.

I have heard that dryer sheets keep mice at bay but I've never had any mice problems so I don't use them.