I think "Creating you birth plan" would be a good book for you. It discusses the reasons for interventions, both real and not so real. For example, a 'big baby' is sometimes a reason for a c-section, but it is possible to give birth to a big baby naturally once you understand how birth works and positions to optimise the pelvic outlet.

I highly doubt your OB and hospital would out and out lie about risks, but if you are well informed then they can't scare you into doing something you don't want to do. Having someone like a doula who can advocate for you might be a good idea too. Husbands aren't necessarily the best people to be doing that.

Another thing I forgot to mention earlier is to not be frightened of the pain. Pain is the body's way of telling you what is going on.