There is good info here for you. To answer two of your questions.
"How do I test if that big black wire from the coil to distributor cap is getting electricity? Should I be able to feel a spark?"
This is a quick check for spark from the coil. If you have spark at the plugs it is coming through this wire. To check the coil wire itself; with the coil wire plugged back in the coil, hold the distributor end of the wire about 1/8" from a bare spot the block and crank the engine over (grip the wire on the insulation, back away from the end, with insulated handle pliers or such). You should see a good spark jump to the block. Keep increasing the distance and see how far the spark will jump, it should make 1/4" or more.
As far as should you be able to feel a spark -- If you do feel it once, you will want to avoid such in the future. It is the same high voltage that goes to the spark plugs and not really good for you. If the wire's insulation is good you won't feel it through the insulation. If you do get shocked through the insulation of a dry coil or spark plug wire, the wire needs to be replaced. Wet wires will show leakage easier and may be nearing time to replace. This is why some engines won't start or quit if they are in the rain. Good tight boots on the wires at the posts help avoid that problem.
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Today's Featured Article - Uncle Cecil's Super A Lives Again - by Mike Purcell. A week or so out of most of my childhood summers was often spent with my Uncle Cecil and Aunt Sissie in the small East Texas town of Maydelle on their 80 acre farm. Some of my fondest memories of these visits are those of learning to drive a tractor at the helm of Uncle Cecil’s 1948 Farmall Super A. Uncle Cecil was the second owner of this wonderful little tractor, but it was almost as though he had adopted an infant. The original owner was a man from Minnesota who bought her from a local dea
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