If you're taking an oral board course you probably don't need to do much prep outside of it. I did buy a book for it, can't recall teh name of it, but the cases themselves are almost useless, you really just need to learn a system that you can systematically go through everythign with each case.
really, hard difficult is it to take care of a 18 year old with fever, stiff neck, and headache?
Its more just verbalizing what you're going to do...
Q