If you are a first time birthing couple, we strongly recommend a natural childbirth class and possibly the use of an experienced doula. My Resources page has a list of both.
You need a comprehensive class to teaching you about the phases of labor and what to expect, coping techniques to help you through contractions, normal newborn behavior and care, and breastfeeding. The typical hospital based classes are geared towards getting an epidural and how to be a compliant patient. They will NOT prepare you for unmedicated birth and their breastfeeding information is abreviated at best.