Vbac/labor question

Darshana • Mama of a Prince and our Princess!
So with my first I was in the hospital for almost 27 before I had him via csection. He was born at 37 weeks and 4 days. I never went through the whole labor process or had contractions. I lost my mucus plug closer to my due date after having the baby. 
So my question is, what should I expect? What is the labor process? How will I know my water broke? 
I know this sounds stupid, but it is a legitimate question.
I just want to be prepared and know signs of labor.