car maintenance in cold, snowy weather

What is your question?

I will be moving from a warm, non-snowy climate to a cold, snowy one. What do I need to know about maintaining my car (e.g., how long to warm it up during the cold weather before I drive, or what kind of car wash I should get and how often), and what kind of equipment will I need (e.g., snow tires?). Thanks much!