Electronics is in almost everything manmade these days. It certainly is a deep field with many aspects to it and not something you simply will discover without any external input.
Unless your name is Georg Simon Ohm, Gustav Robert Kirchhoff, Morse or Maxwell that is😀
If you’re into Electronics or thinking about starting out, here are some links to good tutors.
Make sure to give them the thumbs up and the subs they deserve
Electronic gives you many “oh” “why and “wow” moments, and even some”whoops” moments.. I guarantee you it’s worth the effort if not only in terms of an enjoyable hobby.
I find it very logic while also peculiar and specific. Very sensitive and not very forgiving, but sometimes very rewarding and this it what the chase is all about.
A great book:
https://www.amazon.com/How-Diagnose-Everything-Electronic-Second/dp/0071848290
More advanced types:
The ARRL Handbook for radio communications
Some great learning sites:
https://rsduhamel.net/rsdacademy.net/
https://www.allaboutcircuits.com/
Some great YouTube channels:
https://youtube.com/c/EevblogDave
https://youtube.com/c/learnelectronics
https://youtube.com/c/greatscottlab
https://youtube.com/c/Dronebotworkshop1
Some great circuit testing tools and visualizers:
And get a hold of an older analog oscilloscope
Here are som old classics I got for almost nothing: