How Your House Works: A visual guide to understanding and maintaining your home, by Charlie Wing
Before my parents allowed me to drive, they suggested I learn how to change a tire and check the oil. And learn to read the dashboard widgets!
The same might apply to a house. The head(s) of every apartment and house might need to know the basics. How the plumbing can be shut off in case of a flooded room. How the thermostat works. How the bathroom stool works.
And in the throes of learning how to take care of these minor emergencies, it just might happen that you learn how to make minor repairs that will save you many "retail" level repair bills, and give you the satisfaction of truly being the king or queen of your domain.
This book is a good start in the right direction. It gives clear visual diagrams to help you see beyond the obvious skins of modern magic.