Any information to learn about power?

Do any resources exist from a network perspective on power in our industry? Or if not any good videos/articles you recommend that teach an intro to understanding power + more?

AC/DC, relationship between amps/watts/volts, common outlets/circuits in DataCenter environment... etc.

I found a decent set of videos and reading material but if someone has something that truly helped them understand these topics i would love to know about it.

Thanks!