Welcome E4C,
A couple of things to consider:
1. Read up. See the book lists elsewhere on this site. That will give you some background and a strting point for what skills to accquire.
2. "What" you are preparing for will determine how you prepare. ( A quick brainstorm on likeliest events for Chi-town: Traffic gridlock*, loss of power, Blizzard/ storm, other)
So start with a flashlight, car tools, bottled water and warm clothes.
TRO
* I don't mean a slowdown -- I mean nothing moves for 6-10 hours