That is the most ridiculous thing I've ever heard 'not knowing how to push' there is actually evidence that suggests in an intervention free birth sponatneous pushing is a lot better than directed pushing. Do you come into Chch at all? If you go to the New Zealand College of Midwives down Manchester Street (just by Bealey Ave) they have a wee library with a lot of great books. Ones I reccomend are Gentle birth, gentle mothering and childbirth without fear. There are always midwives lurking around that can help you chose some books and it is all totally free!
I personally think if you want a natural birth stay as far away from women's as possible. Also make sure you mw knows how much you want uniterrupted skin to skin for at least an hour as this is so easily forgotten.
Last of all noone can guarantee a straight forward birth but the more you know and the more you trust your body to do it the higher chance of an intervention free birth