John McIntyre, whom James Wolcott called "the Dave Brubeck of the art and craft of copy editing," writes on language, editing, journalism, and random topics. Identifying his errors relieves him of the burden of omniscience. Write to jemcintyre@gmail.com, befriend at Facebook, or follow at Twitter: @johnemcintyre. His original "You Don't Say" blog at The Baltimore Sun ran from 2005 to 2021, and posts on it can sometimes be found at baltimoresun.com through Google searches.
Over the years, first blogging at The Baltimore Sun and now here, I've presented much of what I know about editing. Perhaps you would find some key posts useful.
The key macro-editing questions you need to ask to deal with the big issues.
Plurals and possessives with "s" and "z."
Geoffrey Pullum's book on applying linguists to the traditional schoolroom grammar.
Why you need to understand conscious style.