Hey Shaun, while that sounds like a good idea, there are legal issues...
The official textbook (my book: Logic Pro 8 and Logic Express 8 - Apple Pro Training Series), is what you need to prepare for the level 1 certification. David Dvorin's book (Logic Pro 8: Beyond the Basics) is what you need to prepare for the level 2 certification. Any topic covered by each book is considered "fair game" in the respective test, so those are really the only way to prepare for the tests, whether you take the test alone or decide to attend a workshop.
It would actually be illegal to do a video version of the book, since all the content is obviously copyrighted by the publisher, Peachpit.