I'd like to ammend part of Calwyn's recommendations ... COnsider beign in a Car in the winter the same as being outdoors. Car's get flats, break down, etc.. and the last thing you want is a 20 minute walk in 0F temperatures with only a light jacket that would usually get you from the car to the door at each end fo your trip. Even if you don't wear it, take it with you in a bag - or have a bag you leave int he car with spare jacket, mitts etc..)
Gloves look nicer, Mitts work exponentialy better. It's up to you if you want to look good or feel good
Sunglasses. You will need a good pair. Sunlight in the summer is bright. Sunlight in the winter is 10x that on a clear day (abotu double what it's like to be on a boat in a lake on a clear sunny day) - it's reflected off everything in sight - and msot fo that is white snow & ice. Driving is tough without them, even going for a 5 minute walk to the corner store can leave you squinting and with sore eyes.
Bass Pro Shop is your friend! GO there, get yourself a few pairs of the Redhead winter insulated socks. They are, by far, the best winter socks you will ever own, and the last pair you will ever buy - because they are garaunteed for LIFE not to wear out and get holes in them! I bought one pair to see if they were as good as claimed - a week later, I went back, bought 5 more pair and tossed all my old "grey with the red stripe" traditional winter socks into the rag pile. The warranty works for damage as well ... I caught one on a nail sticking out from my trim, pulled a thread way out and made a small mess of the sock ... was still wearable, but since I was in the area, figured it was worth trying ... No Quesitons asked, no reciept needed ... handed me a new pair and off i went.
For "inner city" life ... a good set of earmuffs. Anythign that fits well and has even a bit of insulation to them. You will not believe how cold it is as you walk between buildings and get hit by those random gusts of wind that buildings generate. It takes very little time to get really cold and sore ears. The more times they do get cold and sore, the more easily they will do that next time.
If you are taking your own car up there: (If travelling now, save this for later ... if travelling later in the year (septpmber-ish), do it before you leave):
Empty the Winshield Washer FLuid that you have (syphon it out or just turn them on and keep pressign the button until it's empty) and replace it with WINTER fluid - it shoudl say right on the label that it's good to -40C/F. You won't want to be replacing your washer pump (they are plastic and very susceptable to the pressures created by water expanding as it freezes). I usually end of changing a coupel every winter for peopel that forget they had "summer washer fluid" in their cars when winter hit.
Buy a second jug of the stuff and leave it in the trunk. The blue stuff is cheap, and very handy. IF, in the case that you get stranded in winter for whatever reason, the stuff is very high in alchohol content and will burn very easily ... pour it over any semi-combustable item and it'll light almost as easy as gasoline.
Summer Tires & Winter Tires = Wrong. (most do this, but I don't for the "mid season" driving in late fall & early spring)
All Season Tires & Winter Tires = Right.
Other than that, there isn't a whole lot you need to prepare for ... clothing will be the big thing depending on how much outdoors stuff you normally do.
One thing to remember if you are an active outdoorsy person ... Below freezing temperatures = wind chill. That includes breathing. I've seen enough people make the mistake of over-exerting themselves and "panting for breath" and getting minor frostbite in their throat.
Also - Slow down when you are shovelling, active, etc.. It's kind of like working in the heat when you slow down to keep your body cooler and prevent heat stroke. Same aplies in Winter, but you are slowing down to preven sweating. Sweat freezes once it gets into your outer layers, and when that happens, you are walking about in frozen clothing, it takes very little time for that to start into the first stages hyperthermia.
If you toes, fingers, nose, ears start hurting (not the initial "shock factor" of feelign the cold, but the aching throbbing "this hurts" kind), go inside and let them warm up WITHOUT rubbing them - Room temperature water at the hottest if you think you must - and have someone else check that temp for you. DON'T push through the pain if you notice it. When you ignore it forlong enough, it will go away - then it's too late and you don't feel it cause it's FROZEN (or at least cold enough your body has diverted all blood from the area). Frostbite sucks. Once you've had it, it can return that much more easily the next time.
Hot Chocolate (or Hot Apple Cider) are socially acceptable substitutes for any other hot beverage in witner. If invited "out for coffee" in the winter, you will not look a fool for ordering hot chocolate. Whiskey or Bailey's Irish Cream in them (or coffee) is also qutie well received
Ice. The bluer/balcker it is, the more slippery it will be. Same goes for shine ... the smoother it is, the slicker it is. Also, asphalt & concrete - it a parking lot/sidewalk looks like it's "just a shade darker than dry" ... maybe the color it would be after a light mornign fog ... it's probably what's knownw as "black ice" - a layer of ice too thin to be seen, but as slippery as if there was 2" of it there.
Even the dullest, roughest ice is slippery - wet bathtub slippery. Wet feet on a tile floor slippery. I'm glad you have a great sense of balance and aren't too worried :p Try that sense of balance with 5 pounds of oversized boot on each foot and a bag of groceries/books/etc.. in one hand
Turn corners deliberately - step up and down curbs, stairs, etc.. with a purpose.
After your first few falls, you'll figure it out
Lots of us "winter folk" relearn each year to walk more on our toes than our heels (especially on outdoor stairs leading up to buildings - it lets a person fall forward and catch themself, rahter than backwards and using the ground to cushion the back of your head
Also, once the first frost hits and winter starts setting in ... It is considered the most heinous of crimes to use fake Maple Syrup flavored syrups on pancakes, waffles, french toast, etc.. Aunt Jemimah syrup is fine in the summer and on ice cream if you must ... but in the winter, you need the real thing
Lastly ... The first day the temperature is approaching 0F ... try barely touching the tip your tongue to any nice non-painted steel or aluminum item. Galvanized chain link fence posts, screen (porch) doors, etc.. are good candidates. Enjoy the rush of adrenaline and the feeling of panic as it sets in. Embrace the desperation and the commitment it will take to make that final decision to inflict the pain of skining your own tongue upon yourself (a small piece of it anyways). Laugh like you are 5 years old again as you spend half the day talking like a mumbly-peg "cuzth my tongue hurthz". Congratulate yourself on surviving a right of passage for anyone who calls themself a "winter person". :p