Pot of water left on stove. What do I do?

I put on a small pot of water about an hour ago. My cousin came over and said his dog had just ran away so I went to help him look for it. I came back to the pot of water about five-ten minutes ago and the water was evaporated, leaving an oily looking residue, some of it looks light green and crusty. On the burner there is this white spot, half the size of the burner itself. I turned the burner off and I'm letting it cool down before I do anything with it. Is there any way to get rid of the (burn?) mark? If so, how? What about the small pot? I don't have a camera to take pic.s of it, sorry.

Your pot had something in it besides water, probably left from the last time it was used. Wait until it cools and then scrub it appropriately depending on what it is made of. The spot on the burner may go away when it cools off, or the pot's finish may have melted onto the burner. I'm guessing it is an electric stove? If it is, and if the spot does not go away, the burner can easily be replaced. It will pull out of the stove just like an electrical plug pulls out of a wall outlet. Take it to a home building/repair store (like Home Depot, etc.) and buy a new one EXACTLY like it. Take it home and plug it in where the old one was.