For a start just pull all the breakers.

Then if you find and fix a problem you can turn on lights and attach
something to the power outlets and pull one breaker at a time to
document them.

According to my copy of the electrical code you are not supposed to use
the power outlet to connect a series of outlets. It is supposed to be
pigtailed with nuts.

While you are testing things check that the wires at the light are cold
with the switch off. I have seen some house wiring where the neutral
wire was switched.