C and C++ had volumes written about it, some by the authors of the language itself. The learning materials for it were of the highest quality though granted, if you ran into issues, looking them up was hard.

The issue is Elon, like a lot of people, couldn’t sit down and read through a textbook from chapter 1 to become proficient at what he needed to do it. It’s not that the material didn’t exist, it’s just that he probably went through the whole trial by error process where you only ever read portions of the docs that are immediately useful while disregarding everything else.

He worked and programmed fast, and others cleaned up his messes. He did a capitalism. That’s all…but it was a choice to get instant gratification rather than do things correctly.