Yesterday while driving, the guy in front of me

came to a stop as we were going right on green, and since I did not anticipate the stop so I ran into him. And I mean barely. His car had zero damage, and it appeared my car had none either. But upon further investigation I noticed some chip pain and a pretty deep scratch. I was just wondering how much it would cost to fix these yourself, how to fix them yourselves, or if I should bring it to a dealership and have them fix it and how much that would cost. I drive like a 2000 pontiac so it's not a special kind of car or anything like that. Thank you!