Norwegian here, and there are some common mistakes I see in people not used to the climate.

• When walking on ice, at least the very slippery kind, use short steps. It reduces the chance of slipping.
• And if you do slip and begin to fall, take it like a champ and sit down gracefully. The most comedic sights are the ones flailing to try and stay uptight.
• Buy a snow shovel.
• There are many expensive things sold as ice and snow thawers, but these are usually just variations of salt and gravel. Whatever salt you can buy in bulk at the grocery store works just fine. And any sand/gravel that you can find in the summer will do.
• When shoveling snow, clear a wider path than what you think you’ll need. A narrow strip is hard to keep clear after a while of heavy snowfall.
• If you have a car, make sure to have proper winter tires. If you do, you won’t have to bother with snow chains.
• Car batteries don’t like the cold. Make sure yours can hold charge well. Overdoing it with AmpHours is also a bonus.
• Get a scraper to remove ice from your windshield.
• Wet feet become cold feet. Stay dry. Wool socks are amazing at keeping your feet both warm and dry.