Still laughing,
Yes i teach the PADI Digital Underwater.
Do you have the book and DVD?
Digital technology is moving along fast and publishing a book on a subject that changes quickly is difficult.
The edition I'm using is (5/07)version 1.01 'Digital Underwater Photographer' PADI
It comes with a white balance card and DVD.
Its a good start on learning the terminology and thats very important to get the basics solid.

White Sands Dive Shop
https://whitesandsdiveshop.com/