First time dealing with possible snow in Seattle, what are things that I should know?

This upcoming week has potential snow in the horizon, I’m originally from California and I have never had to deal with snow, I live in Capitol Hill and I don’t drive as I use public transportation.

I do live on a hill, so I’m kinda nervous about that! Do people actually use those shoe spike attachments that they sell at Costco ? What tips do you have ?