Since I learned what letters and words do, I’ve put them together to convey ideas or just for fun. In college, I was editor-in-chief of the campus newspaper, I was an interning editor for an educational catalog/magazine for three summers, and even interned at a large hospital writing/editing their internal newsletter. All this meant that I was THAT person. You know, the one who has marked up style guides and grammar handbooks.
Here’s a list of some handy reference books that are useful for even the most devoted grammarians.
The Copyeditor’s Handbook: A Guide for Book Publishing and Corporate Communications, Third Edition, With Exercises and Answer Keys or the latest version The Copyeditor’s Handbook: A Guide for Book Publishing and Corporate Communications, With Exercises and Answer Keys
But beyond grammar, these are favourites about the writing process.
Steering the Craft: Exercises and Discussions on Story Writing for the Lone Navigator or the Mutinous Crew or the latest version Steering the Craft: A Twenty-First Century Guide to Sailing the Sea of Story
Of course, if you’re looking for something more general and basic, these might be good.