Electrical Work I
If possible avoid it. Electricity is dangerous. When it's required I shut off the main breaker. This has the added joy of the need to reset all the digital clocks ( stove, microwave....) which will now be blinking 12:00 incessantly. More on "phantom" appliance costs later. I have fond  memories from early childhood of my parents yelling up and down two flights of stairs while replacing Buss fuses. It struck me then as a near war level of teamwork and excitement. I once "tested" a newly installed outlet with an iron and actually jumped for joy when I burned my finger! I now use a clock radio so I can hear if it works from the basement breaker panel. Finally, we have a collection of assorted light timers. Some work, some don't and others we lost the instructions. We found that some models appear to work, even emanating a pleasant humm and then fail to fulfill their purpose of turning the light on and off!