look at a lot of different cars to get a feel for whats out there and the market on a perticular model...take a friend with you that has experiance with classic cars and will be honest about the TRUE condition of the car...you will have blinders on during your excitement and dreaming!
It would be best to get a driver, hopefully with good paint and body, and slowly do bolt-on upgrades as funds allow...this is a good way to enjoy the car as you build and truely notice how much the new parts improve things. If you buy a roller or shell of a car it will probably be years before you get to drive it...I'm about to hit year four myself and can't wait for that first drive! Actually, I'm a bit depressed as I type this as I know how much more work has to be done before that day comes. Moral of the story, get a driver, stock pile parts, and then do a quick rebuild of systems and get it back on the road as fast as possible.
Good luck and remember to have fun!!