I was a top Navy Electronics Technician. There are submarines cruising the ocean with parts I put into them. I know electricity like the back of my hand. In this book, I show the reader how easy it is to learn electricity. The difficulty level is about what my first week of Naval Orlando training school was at. Or what you would learn after a whole year at a community college. I met seamen who said that...who attended cc and then enlisted in the Navy. They said: we spent a whole year studying one radio! After one year in the Navy's electronics schools, you can take apart and reassemble a nuclear submarine blindfolded. Or a satellite. Or an airport radar system. Not kidding.
This author needs to take a basic middle school English class. The text jumps around to meaningless examples and really does not explain anything well. I'm not sure what he was trying to convey.