1994 Buick Lesabre Lesabre will die, misses, will not start

Can I test this myself? Since car won't start today and possibly never again, I have no transportation and I live in avery remote location in Tennessee. Thanks.

Thought over what has been happening. Car produces symptoms as described before. Everytime, father puts gas in the car and says I just needed gas and it runs fine. However, this doesn't explain why the power options do not work such as windows, power locks and power seat. So, my think was, if this is possible, the fuel pump does fine when the electrical connections are submerged in liquid. After having thyought this through and doing little things all day without success, I walked out and shook the car thinking maybe I would get gas on the connections in the tank and got in the car after shaking and it started right up. This has me bewildered but if you would, please look over this thoroughly and see if you think it's possible about the fuel pump shorting. Also, I went to gas store and put $7 dollars, but, car died prior to pumping gas. I shook the rear end of the car until I could hear gas sloshing and the car started right up. $7 dollars is all the car would hold at $2.59 a gallon. Thank you so much for your replies and I am sorry this is so long, I just have to have the car to get to work.