Can I do my Buick Enclave’s tuning by myself?

After I heard some engine misfires, I thought I’d check the spark plugs. I’m not totally sure what I’m looking for. What do bad spark plugs look like?

I recently moved to Washington, D.C. for a job. It’s quite a transition from where I was living in rural Virginia. While I’m starting to adjust to the move, I can’t quite shake the urge to speed when I’m driving. What is reckless driving in Washington, D.C.?

Last night, I parked by our trash cans and we had some pretty strong winds that knocked them into my car. Now, I have all these scratches along the passenger side of my car. They aren’t big, but I would love to get rid of them. How much will it cost to fix the scratches in my car’s paint?