A:Answer Difficulty depends on the vehicle. If it's older, then anyone with some basic 12v auto install experience and tools should be able to handle the job. It's a matter of running/connecting a video line to the monitor, and the most difficult part is power as you need to run a ground wire and a '+' power wire that ties into the reverse light '+' circuit somewhere. Requires some interior dis/reassembly. It can get a bit more complicated, including needing a diode wired in on reverse circuit, if you want to add a switched line to activate the camera and monitor whenever you want.
If the vehicle is fairly new it gets more complicated as you need to be able to trace circuits, find ones that behave in certain ways, and be able to understand/wire in relays and run some extra lines. Still not rocket science, but a bit more involved than the old days of straight 12v circuitry!
The alternative is having BB install it, which I'd guess is probably a fairly inexpensive job for an experienced team with all the right literature & tools.
Good luck!