[loganmhb]

I second the recommendation of Style: Lessons in Clarity and Grace. That book did more than any other to help me both write more clearly and explain to others how to do so (was a writing tutor in college). Many writing books give concrete advice on trivialities and retreat to vague prescriptions on subjects like elegance and clarity. This book is the only one I've read that actually studies those aspects of writing and offers actionable advice on how to make writing clearer, more graceful and more elegant.