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Study "The Elements of Style" (https://www.amazon.com/Elements-Style-Fourth-William-Strunk-...), a classic on better writing. It will teach you about how to really write for the reader and not for yourself.

I also recommend Steven Pinker's Sense of Style[1], as a more modern and definitely more interesting to read alternative.

Aside, for years PEP8 included the phrase "When writing English, Strunk and White apply", which used to drive me up the wall ...