The lights in 2 bathrooms, hallway lights, & front porch lights don't work. I checked the breaker and it had been tripped. I reset it and tripped again. Purchased another breaker and the same thing. The outlets work just not the lights. Any suggestions?

Outlets must be on a different circuit. If the circuit keeps tripping you have an overload or a short. You will need to unplug everything on the circuit and try it. Could be a short in an outlet or appliance or burned wire in a ceiling light.