The things it could be would take several pages. Is it firing? Check if it is firing, that rotor is turning, and valves are operating and repost this question.
if it has been running recently then it could the control module on the inner fender it is a square looking box with about 8 plus or minus wires pluged into it
Is it getting spark? You might want to make sure your timing is good and your wires and plugs are all good. If its been sitting a good thing to do is change the plugs and wires.
