Help with some body damage?

So long story short I'm an idiot. I was backing my 94 300zx out of the garage and uhh... dinged it up quite a bit. Now I have white scratches all over the body and a huge dent by the wheel well. Here's a picture of the damage http://imgur.com/UCKcsU1 I don't know anything about body work so any information on how to fix this without breaking the bank would be much appreciated!