> These aren't great to be honest. I've scanned through them in the past and there's a ton of missing stuff. You can read these and know what stuff is and how it works but not how to use it or any practical concerns. This is just a collection of facts.

Well, they're not meant to get people on the way to understanding James Clerk Maxwell.

They're meant to get high schoolers without much (if any) formal science training to the level that they can safely maintain, operate and repair the specific electrical and electronic components used in Navy fleet applications.

So yes, everything about how this stuff actually works is simplified, and often even "dumbed down".

So I wouldn't use these guides as reference material if I were trying to take college-level versions of these courses as you'd just have to unlearn and re-learn too much to make it useful. But there's a method to the madness here.