Taking my deep diver course soon. The instructor said we could pick up the manual which is about $45 plus the PIC card or do the E learning. I see some crew packs with a DVD and manual, does the E-learning have the same amount of video in it as the DVD? Looking at which one to buy? Is there a lot of useful info on the deep diver manual? I also saw some old threads that the manual is online for free. Wondering if anyone knows if I could use that instead.