One of TeamUP! Tutors’ new writing tutors is also a professional copy editor. I spent some time going over a couple documents with her. What incredible attention to detail! More than that, she has a superb knowledge of grammar and usage. Several times she referred to her bible, The Chicago Manual of Style (at Amazon). At a daunting 900+ pages and $55 list price, it’s not for casual use!

There are many sites online (like the Write Place Catalogue) where you can find some similar information free, but it won’t sway anyone – and it might be wrong.

If you’re looking for a great student’s writing guide, then get Strunk & White’s Elements of Style (at Amazon). Recently updated, this guide (first published as Strunk & White’s in 1959) is still required reading in many English classes. And, at 100 pages, it’s an easy and (I recall) an enjoyable read.