Well, I’ve had a computer in front of me since the 70s. Don’t conflate longevity with knowledge tho. I’ve had no formal training, even tho I ‘ran’ the IT dept for a small construction company in another life. One of my jobs was to train old head construction workers on how to use a lap top, a digital camera, how to interface with our servers to upload data from the field. That was wild.
But, no formal training here. Most of what I know I learned by: Reading, screwing it up, doing it again, ad nauseam. And then when something worked, write that shit down.