
Great easy read all you need for the Advanced Open Water is here.
Purchased for my son's AOW class. Never used anything but the book. Check with your instructor before making the purchase and you may save a few bucks.
This is required training material for PADI Advanced Open Water Course. It is a lot of material from several different specialty course summarized and condensed into this manual.
What can I say? ... if you are taking advanced PADI courses you need it. [...]