Hi,
firstly congratultions! it is such an exciting time!
if you haven't organised anything yet don't panic, i would start by seeing your gp or ob and see if they recommend any hospitals or birthcentres in your area, often they can organise it all for you, or you can contact them yourself.. then you just need to wait for an appointment at your chosen care giver.
Then just try and gather as much information as you can on everything to do with labour and birthing so you can make informed decisions on what you'd like to happen and what options are available to you. There is heaps of information on here and lots of people that would be more helpful than i am!
HTH, good luck!