How to I reset my lights/outlets on this system?

We just bought this house so I haven’t had to deal experience a tripped breaker until now. I honestly can’t even tell which one is tripped. I tested out a small fan space heater in our add on and it seemed fine, 15 minutes later the lights and outlets went out in half the house. Also yes we plan to update it in spring with taxes, at least I’m hoping we can wait until then