I learned various bits and pieces of grammar with each paper that came back covered in red or purple ink. Each teacher that took time to mark awkward sentences, explain the importance of the serial comma, or try to get me to understand the uses of the every mysterious semi-colon helped me build a style manual in my head. My style manual still contains some of my own idiosyncrasies but each year I learn more.
For me the rules and structure of language come long after I know what it should sound like. I don’t know that I will ever be a grammarian, but that will not stop me from loving words and the structure they need to thrive.