This seems mostly a guide from a 42 School student towards other 42 School students. It shows one of the issues of having previous-year students teaching young

This seems mostly a guide from a 42 School student towards other 42 School students. It shows one of the issues of having previous-year students teaching younger students: they don't always have enough experience to know the best way to teach things. Overall, the title is very misleading, a better one would be "42 School Cheat Sheet", ideally with "by a former 42 School student" appended.