I wish someone could explain the clock to me like I'm a "Special needs" 3rd grader...

Edit: The only answers that sort of kind of attempt to explain the clock, boiled down in plain English, simply state that if you don't know how to use the clock, it's because you're (I'm) not smart enough to understand it. I wish they would attempt to explain it instead. Drink more Ovaltine.

I wish someone could explain the clock to me like I'm a "Special needs" 3rd grader...