I knew I really wanted to breast feed, so I read heaps and heaps of information.
In Earlyparenting classes (ante-natal classes), we covered it a bit- the thing that stuck in my mind from the class was- its like eating a hamburger- their mouth needs to be as wide as possible to fit a whole mouth ful in. It worked remembering that in the early days.\I also had DD in a private hospital, and whilst in Labour, i explained to the midwife my desire to make bf successful. When on the ward, nurses would pop their head in every few hours to see how I was going- and if I buzzed for help, no matter what time of the day or night, there was always a midwife to help straight away.
As one ferson has said, no one tells you how much it will hurt in the first few days, but once you are over the pain it is much easier.
Also, it looked easy- until you are actually doing it for yourself, and realise just how hard it is.