I didn't know how to drive a stick until I picked up my manual. At that point the dealer spent 20 mins with me and I learned how to shift from N to 1st and the rest is history. You sound apprehensive about buying a stick. Let me tell you you will probably be second guessing yourself for awhile but once you get the hang of it you probably won't go back. It increases your confidence and driving experience everyday.
I just saw transporter 3 for the kick of it and the scene showing jason pushing the stick on the audi automatic makes me shake my head every time.