Just pull into the garage, turn it off and walk away until your ready to drive it again. If you can monitor it regularly, place a battery tender on the battery.
Yes sir, haha - we do have a lot of snow, especially in the past couple of Winters! The Baltic region is slowly becoming more and more Scandinavian, as far as huge blizzards are concerned, hahaha!Lithuania? I'm sure it gets quite a bit of snow there, lol.
It's a good practice to start the car and let it run for at least 10-15 minutes or so a month during the winter. This will keep oil from completely draining from the surfaces of the engine internals and will keep the battery from going dead too.
Like mentioned a battery tender is a good idea too but make sure that you have a newer computer controlled one that monitors the battery and doesn't overcharge it.
If you have 10% ethanol in your gasoline(most of the EU does I hear) then buy a high quality gasoline stabilizer and put that in the gas tank to help minimize the effects of the ethanol. Ethanol is hygroscopic and absorbs water. This will rust out gas tanks which is just one of the reasons why ethanol is awful in gasoline.