Watch Positive Birth Documentaries
The Business of Being Born has become the main go-to for viewers hoping to learn more about natural childbirth. Admittedly, I watched this film more than once before I was even pregnant because I was so inspired by the idea of childbirth not being scary. Prior to viewing it, my perception of giving birth was shaped almost entirely by frightening scenes in movies. 

Other great documentaries include Midwife and Birth Story: Ina May Gaskin & the Farm Midwives. Additionally, there are some inspiring TED talks about birth, like Ina May Gaskin's, "Reducing Fear of Childbirth in US Culture."