I'm sorry to read that you're not feeling well, Tony. I hope you are feeling better soon.
I've been reading about the CAGED system and have watched a few YT videos on the subject.
My take aways:
1) It's one tool of many for learning how to navigate the fretboard
2) It has its fans and detractors
3) People feel kind of strongly about it
4) Most of the people trying to explain it in the YT videos get do a great job on some aspects of it and a not so great job on others, leaving plenty of confusion among viewers
5) The concept of movable chords is very important to learn for guitar; however you get there is all good
Early on, a friend told me that if you're playing all closed strings, you can move them up and down the fretboard. So if you fret an open A chord, then move it up the neck, just playing those three strings, it will become an A#, B, C, C# as you go along.
I think as beginners we get stuck close to the nut because the first thing we learn is cowboy chords. Cowboy chords are easy but they're not moveable as such. If you fret an open C major and start moving that shape up the neck, the farther you go, the more dissonant the sound because the notes on your closed strings are getting higher, but your open strings are staying the same.
BUT if you move the shape, and you "move the nut" by barring across the strings with your first finger, then the chords are harmonious sounding again.
It may be easier for people to visualize with a diagram. I like this one:
https://www.reddit.com/r/guitarlesso...tem_locations/
This is for the major chords. I would assume it works the same for minors, 7ths, etc.
The other reason it's helpful to have some way of understanding how to move up and down the neck is for doing solos and riffs. If you play an open C chord, then want to do a little solo, you know where to find the other notes on the neck that will sound good with it and your fingers can frolic around in that area making you and your guitar sound awesome.