Dude, don't go off the deep end! It's not that bad, and can be fixed. If it's urathane 1 stage it can be fixed easily. First let the car sit in the sun for another week, don't worry about water spots they will come out. Then get some good compound like Tim said. Now you can do this by hand, but it would be easier if you bought a cheap buffer. Use the compound in a small hidden area first, in the shade, to see how it goes. Put some compound on the buffer pad and work it in letting the machine do all the work. Do Not push down to make it faster. Once you see that most of the scratches are gone, do the rest of the car. Then find a good glazing polish, change your buffing pad, and do the whole car the same way you did it with the compound. Then wax, either by hand or change the pad again, and use the buffer.