Inertia reset switch

i drove my car to the store came out went to start it it turned over but would not start it seemed like it wanted to but wasnt getting gas i checked the fuel pump fuse replaced the fuel pump relay fuse but it still wont start the guy at the auto parts store told me ther was a red override reset switch that might need to be reset but i looked every where and couldnt find it do you know where it is located and if its not that reset button what should i check next