Not starting. Turning over but not firing. Where do I start? Ignition? Fuel?

If it starts when you add "fuel", then you either have too much air getting into the engine, or not enough fuel. Diagnostic testing is needed -- no guesses can be offered here - or anywhere - without hands on vehicle assessment with proper tools and reference materials. My first thought would be - do you have proper programmed keys for the vehicle? Did anything happen right before the problem started that is notable? Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops