So your already a certified diver and have made a few dives what's next???   

Become a better, more competent and confident one of course!!!

The Advanced Open Water course consists of 5 dives spread over at least two days, focusing on  developing new skills and theory, also go over anything forgotten from OW

Each dive covering a different subject, 2 are compulsory, 

Deep and Navigation, the other 3 can be chosen from:

Peak Performance Buoyancy

Underwater Naturalist

Computer Multi Level

Boat

Drift

Nitrox

Cavern