Answers

You should find someone more competant, the major appliances should be on their own breaker (furnace on a 20a breaker and gas tankless on another 15 or 20a). It can be normal to spread out the circuit recepticals in a few rooms so if a breaker trips in a room there would be another receptical in that same room on another breaker so your not left in the dark. Also the panel should be properly labled. Good luck.