Attn snow dwellers!!!:Winter clothing?????

So this probably sounds so lame haha BUT I recently moved from the beach to the mountains. I absolutely love it up here its amazing. However I just realized temperatures will start dropping in 2 weeks and we will be getting snow soon after that, and I have exactly zero clothing suitable for that, I basically have 75 degree year round beach clothes! When i was a kid I stayed in New Hampshire for a month every winter but I just wore my cousins hand-me-downs so I dont remember what I wore it was so long ago!

So for anyone who lives in snow, what are the must haves and what can I go without?? I dont have a lot of money and i only want to buy the bare minimum but good quality that will last.

Also, if you have any tips for my baby girl too they are welcome!