[clarry]

> It becomes 10x more valuable when I was deep into my career learning from the big shots.

Yeah well OP said they've 15+ years of experience so..

> Especially with a language like C. It's not so straight forward without some training or CS education.

I agree with pritovido, when they say C is a very simple language. Sure, it has grown its quirks and gotchas along with some cruft (the kind of things you wouldn't learn about in a CS curriculum anyway), but at its core it really is very simple.