You are about to get many different opinions. Clean it, so the crud doesn't set in. Put some fuel stabilizer in. Park it on some wood, like plywood to keep the tires off the damp cement. Battery on a tender, or at least bring it inside. Cover it and you are done. Wood under the tires is probably pointless, it isnt going to sit that long. I dont do that anymore. Modern tires dont rot or get flat spots.like the did decades ago.