Which book/subject you wish you had early on in your programming career?

https://www.tedinski.com/archive/

healthy criticism of common software engineering practices, with very helpful practical ideas to use in your own design / engineering.

Apprenticeship Patterns(https://www.programmingbooks.dev/#apprenticeship-patterns) and Pragmatic Thinking and Learning(https://www.programmingbooks.dev/#pragmatic-thinking-and-lea...) are two books I wished I read early in my career. I read them many years into my career and still feel they had a big impact on me but I believe they would have had a bigger impact if I read them earlier, within the first year of me being a professional developer.