Alex gears his workshop toward divers who understand the rules of composition, have a firm grasp of manual shooting, know their way around their camera, and have buoyancy mastered. You should be able to set your F stop, ISO, shutter speed quickly, and know how they work together. You should also have a basic knowledge of fixing white balance, adjusting exposure, dialing in highlights, shadows, etc. (I love Erin Quigley's "Go Ask Erin" On-Demand modules at $19. She's a sorceress! (www.goaskerin.com)
PADI photography classes provide an alternative for newer or more casual shooters. They introduce and reinforce the idea of shooting up, covering the importance of making eyeball connection with a subject, give solid composition guidelines, and have students use automatic settings. The curriculum covers a good amount of material without being overwhelming.