I received my study materials about 12 months ago
I am nearly finished my course in Brisbane and wasn't sure if you knew how far you would be driving. You'll get your materials close to the starting (I got mine 2 week's before my starting date). It will have starting time etc in your pack.
Re; your medical try and get your doctor to do the form electronically. If they won't then make sure call Casa and tell them the story and continue to hassle them until you get it.
Best of luck.
Cheers
Shags