The problem there are different levels of detailing. You can go as simple to wash, dry, then wax, all the way to wash, dry, clay, polish, clean, seal, then wax. I mean, it depends what you want your end result to be, how much time and effort you're willing to put in, and of course, how much money and how willing you are to learn.
If you gave me 8-12 hours depending on the condition my car starts, I could return the car to a better then factory condition minus obvious wear and tear, major scratches and dents of course.
Oh yes, you typically want to hand dry your car. Leaving water on it can leave water spots unless you have a filter/softener or use distilled water. Leave water spots on your car long enough and it will eventually etch itself into your paint. Scary huh?
"We live for a good time, not a long time."
RIP Colin McRae