Taking an Independent Childbirth Class (typically one not affiliated with a hospital) is a great way to learn what normal birth is.
It is well worth the time and money to be educated about normal birth.
The information presented in class will go a long way in helping you trust your body and baby.
There are many different choices for Childbirth Classes. Find one that fits with your desires for birth.
I discuss a few different options available in this podcast episode.