Any Chicago/suburbs BYC out there?

My chicks have been ordered and arrive in April!!! I am getting very excited to start my own little flock in my backyard. I live in the western suburbs of Chicago and have some questions for those living in the same area.
How are your flocks dealing with all this snow and cold weather? Do you do anything special in the coop besides adding extra bedding to keep them warm? I'm guessing that in the extreme cold weather we had, other precautions are to be made. I would probably bring my girls into the garage to keep warm during that negative 30 weather we had. Hopefully next winter won't be as brutal. (fingers crossed)

I'm starting my flock very small. Only 3. I have on order an Easter Egger, a Barred Rock and a Buff Brahma. I've ordered a cute little coop (That will house up to 6 hens) and can't wait to construct it. Now I have to wait for all this **** snow to go away!!! I will keep the chicks indoors with us for the first few months (or until the weather is tolerable). My sister is starting her own flock at her home as well. We are both very excited and can't wait for them to arrive.

I think the winters here is my biggest concern. I know we have been spared the past few years (no wonder we are being punished this year). So any suggestions/tips would be greatly appreciated. Or any advise for a newbie just starting out would be helpful!
Thanks so much for reading!