To the seasoned: "Microcontrollers and programming" where does the right training begin?

Question

Arduino

Allow me a little digression ...
In general, since childhood, I have been interested in the so-called (motors of light bulbs and wires) and now, by the student years, this whole thing is asking for a more serious direction.
I tried myself in many ways, CNC, arduino, repair, assembling stoves, and so on ... the list is not small
. And as a result, now I understand that since when I was just interested in wires and blinking lights, nothing has changed, and brains have not increased)
Later I caught myself thinking that in every case I came to the wall with the inscription "I don't understand what to do, because I don't know how it works"
And then the moment came when I forced myself to sit down for a specific study of the mat part and everything adjacent, to understand how everything works from the inside.
Eee.... here begins the chaos in its beautiful manifestation!
Dozens of couch critics in this Google of yours are screaming into my ears so much that I can’t understand what they are saying.
“Learn the programming language first and don’t go anywhere until you know it”
“Better go work at the factory and don’t go to serious uncles”
“learn what a computer is and how it works”
“what kind of stupid questions, did you hold a soldering iron in your hands? "
and much more ....
One question, are you serious?? Is it really so difficult to direct youngsters now, and most importantly, where does so much aggression come from?