Lots of great content in the launch process which will help you to write copy that sells.
Here are three links:
Simple Writing System - John's website - affiliate link
Simple Writing System - my Online Profits blog post that tracked the October 2008 launch with sample videos of John presenting the Simple Writing System
John Carlton Copywriting Mentoring program - my March 2009 blog post for the re-launch of the Simple Writing System.
Disclosure - I am an affiliate for John Carlton and the Simple Writing System. If you buy after clicking through from my link, I will earn a commission.
I Recommend This Other Marketing And Business Growth Training
I liked this training product so much that I paid money to licence and white-label it.
As well as covering copywriting and persuasion, it also has just about everything else you can think about for marketing.