It's the big Eclipse Day, and no doubt you have some questions that no one else has answered to your satisfaction. I'll do my best.
Q: Didn't ancient cultures believe that the eclipse was a dragon eating the sun, hence they would bang pots and pans to drive the dragon away?
A: Not entirely. If the dragon was eating the sun, then the return of the sun meant it had passed through the dragon's intestinal system. Everyone was grossed out thinking about that, so there was no banging of pots. No one even went outside until after a good rain.
Q: What's the best place to watch an eclipse?
A: Scientists say "where it happens." In this case, the path of totality, a narrow band that cuts northwest, starting in South Carolina. Or, wait, is it the other way around?
(Note: It literally cuts. The eclipse is expected to leave a smoking trench one mile in diameter.)
Q: How long will it last?
A: Until the cries of the nation have been joined by the numberless cries of the birds in the trees and the beasts in the fields in a terrible song without melody or meter. Until the heavens themselves have shown stars in such number they can never be counted; until the counting itself has concluded.