Speaking as a person who has a little experience in dealing with a hangover, I feel qualified to add the following tips.
The only cure that exists for a hangover is time.
Drinking lots of water and eating bananas and candy will help.
Coffee makes a hangover worse, not better. Coffee is a diuretic, which is the last thing you want if you have a hangover. And, the caffeine will make the shakes even worse. How the myth that coffee will sober you up got started I will never understand. Coffee does not make you sober at all. It just makes you shaky, jittery, and nervous. It's the worst thing to drink when hungover. Orange juice is ten times better for you.
Anyway, those are my comments for whatever they are worth.
Cheers!