Don,
Most of the copywriting courses you'll find out there are missing one essential ingredient: feedback from an expert copywriter that lets you know whether or not you are actually learning and applying what you've read.
Time and time again I've heard one of my copywriting proteges tell me during the course of one of our live, one-on-one "lessons," "Oh, I knew that. My gosh, I totally forgot to apply that principle here. Let me go back and do it again."
There's a huge difference between 1)knowing something intellectually, 2)being able to apply it and then 3)knowing it in your bones so that you apply it without even thinking about it.
Consider looking for a copywriting instruction course (like mine) that not only imparts #1 but also #2 and gets you on the road to level #3, which is where you really want to be.
Cheers,
Marcia Yudkin
Author, Persuading on Paper and 10 other books
Become a skilled marketing consultant/copywriter in 10 weeks