Painting the hood
 

Can anyone tell me how much will it cost to paint just the hood of a car?

You could probably get a wide variety of prices, from $200 all the way up to $1000, and the results could vary just as much as the prices. All I can say is ask around, to friends and relatives, to see if they know someone who does good work, at reasonable prices. Other than that, I would just check at least three places, to get a good idea what they charge. I've had not-so-good results from three different paint shops. The last one I could have done better myself, with rattle cans. Good luck, you'll need it in my experience.