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That, and knowing how to ask questions on StackOverflow or in IRC/Discord/Slack/Matrix.

Man, I really wish SO had a "Close question because answer is in the documentation" option. They'd see their traffic halve overnight.

It's the other way as well, if a question gets asked/answered on SO, it may be a great addition to the documentation.

Sometimes searching StackOverflow is quicker than reading the documentation/manual.