1994 Honda Civic Slips and maybe fuel injectors

I have a few diffrent questions, First, My honda Civic seems to have lost all horsepower, The car has a very hard time going up hills. I try and get a hard start but then end up slowing down dramatically. What can I do to restore the horsepower? Second, My car almost ran out of gas yesterday, I made it to the gas station, put gas in the car and now it runs Very rough. When I stop at a red light I have to throw it in to park and press the gas or the car will die. Sometimes it starts right back sometimes it doesnt. I can smell gas when I start the car. Did I mess up the fuel injectors, maybe clog the fuel pump filter? Some also told me that there maybe a reset button is that true? I just dont see how I would have messed up the car if it wasnt completely out of gas, Help please!