Back in high school I was the copy editor for the paper (and the minutiae of AP style are still seared into my brain), and it's definitely been a useful skill.

Back in high school I was the copy editor for the paper (and the minutiae of AP style are still seared into my brain), and it's definitely been a useful skill. My first job was doing developer marketing, and we had a lot of devs that were happy to contribute to our blog but didn't feel their writing was great - a lot of it was just little grammatical and style stuff, so my being able to clean it up really encouraged them to work with me on creating content. That said, I think that reading a book on copy edit just to be able to edit your own stuff is a little bit of overkill. You don't need a deep, sophisticated knowledge of grammar - something like Strunk and White's Elements of Style will cover the grammar stuff you need while also helping to offer a little bit better sense of bigger-picture writing style.