Hello fellow Canadian!
I'm from Manitoba, just about as cold.
Storing the coach over the winter is not that difficult.
The first thing to consider is winterizing the water system. Drain all the water out, including draining the hot water tank. Check that your hot water tank has a bypass valve. If not, get into any RV store, they're only about $30.00. Bottom line, you have to get RV antifreeze into the entire system, flowing from the taps, but you don't need it in the hot water tank as long as it has been drained.
The second thing is to make sure the batteries will be OK. You can put a battery charger on them and check them every week throughout the winter, or you can remove the batteries and store them in a non freezing environment. You should check them with a battery charger a couple of times through the winter.
I try to make sure that the last tank of fuel I buy before storage is winter fuel, and I usually throw in a bottle of fuel conditioner to help soften the tarnish deposits over the winter. I think having winter fuel in the tank is important, because a couple of times through the winter, on warmer days, I like to fire the beast up and give it a nice long warm up.
The rest is pretty straight forward, really no different than parking your car for the winter.
Hope it helps.
Jim & Kate
2016 Creekside 23RKS, 2014 Ram 1500 Eco Diesel
1995 Monaco Dynasty 36', 2005 Honda Pilot