When I started working with an editor who also professionally checks typesetting of pages for book printing, I discovered a new set of things I didn't know about.
As I’ve mentioned in earlier posts, I keep a running QA list of things to check. Now I have a new section, for typography. Here’s my short list of typesetting things-to-check, and how I fix the errors and inconsistencies.
Recently there was a back-and-forth in a indie author group about whether or not to use the Oxford comma. Some of it was kind of funny. One person asserted that when she sees someone use the Oxford comma, she assumes it's someone over 60. I posted a link to a FiveThirdyEight post on a survey that showed that younger people prefer it by a wide margin over the 60+ group. So she said that's only a U.S. thing. Evidently in New Zealand, only old people use it.
What, more commentary about writing? Isn't there enough of that?
I've been an "indie author" for over ten years. In 2006, I set up my own publishing label, figured out how to format / prep my WWI naval history book, got it printed ... the whole deal. (You can see it here.)