The first was found at the American Press Association site, and it listed resources at several sites.
Through API, I found The Slot; CopyDesk.org, the home site for the American Copy Editors Society.
There was Towson State's Copy Editing Resources.
I found some of the same sites on the Google Directory of Copy Editing.
I came across A Capital Idea, a blog by Dallas Morning News copy editor Nicole Stockdale. Nicole's blogs range from very short to very long.
I found the John Brenner Editing Test on the Kansas University School of Journalism site. Beware; it'll make even an old copy editor work.
There's a page on How to Edit Your Own Writing.
I found the Midsummer Institute for Midcareer Copy Editors. The site even has something from someone I know, Andy Bechtel, a J-School professor at the University of North Carolina.
I came across the E-resources for Copy Editors on the New York University site.
Finally, I came across Wikipedia's page on Copy Editing.
It's amazing what one can learn about copy editing.
More EDITOR@WORK blog entries
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Blog entries from The Auto Racing Journal
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(the book of great NASCAR stories)
More blog entries by Tom Gillispie
Anecdotes by Tom Gillispie