Is there a good grammar brush-up for the literate?

I'm a native speaker of English who'd like to bring her language skills up to a professional level. Since I'm not in the habit of using phrases like ';butt naked';, or ';beyond the pail';, I'm having a hard time finding an appropriate book or website.





Can anyone recommend a grammar/usage brush-up for native speakers who are already literate (maybe ';usage for people over 45';, or...something)?





Thanks!Is there a good grammar brush-up for the literate?
The Grammar Bible by Michael Strumpf and Auriel Douglas


Eats, Shoots, %26amp; Leaves by Lynne Truss