I will concur that advanced training requires supervision (ie wreck diving and cave diving).
Initial learning curve is fairly steep for those who want to learn and have great instructors. I personally would not recommend advanced dive training until you have at least 50 dives under your belt in open water 40-80ft environment. And even then you have to decide what is right for you.
In my personal case for example I always practice buoyancy skills on every dive primarily because I video tape which after 4 years I am still learning. I also clear my mask under water on every dive because my late mask almost always flooded or fogged up until I retired it about 2 weeks ago. Additional training is .... a personal thing. For example I do not have cavern diver certification but I dove caverns probably 10 times now and I know exactly where my limits are. I can't say I love going cavern diving. It's dark and silty and visibility is iffy and nothing to see except for maybe 1 fish. I also practice removal of my gear at least once per month but more out of necessity. My pony bottle bracket wiggles itself loose (not off) from my BC tank strap so have to fix it every once in a while.
I would have to say that everything that you learn in initial OW class is something every diver should master. Knowledge and mastery of OW skills do not only come in handy every once in a while but will make any emergency event into a well practiced controlled mechanism. I can attest to it. I had 2 O-rings blow on me in a cavern and my training as well as my buddy's training made stressful situation into a minor inconvenience than anything.
Initial learning curve is fairly steep for those who want to learn and have great instructors. I personally would not recommend advanced dive training until you have at least 50 dives under your belt in open water 40-80ft environment. And even then you have to decide what is right for you.
In my personal case for example I always practice buoyancy skills on every dive primarily because I video tape which after 4 years I am still learning. I also clear my mask under water on every dive because my late mask almost always flooded or fogged up until I retired it about 2 weeks ago. Additional training is .... a personal thing. For example I do not have cavern diver certification but I dove caverns probably 10 times now and I know exactly where my limits are. I can't say I love going cavern diving. It's dark and silty and visibility is iffy and nothing to see except for maybe 1 fish. I also practice removal of my gear at least once per month but more out of necessity. My pony bottle bracket wiggles itself loose (not off) from my BC tank strap so have to fix it every once in a while.
I would have to say that everything that you learn in initial OW class is something every diver should master. Knowledge and mastery of OW skills do not only come in handy every once in a while but will make any emergency event into a well practiced controlled mechanism. I can attest to it. I had 2 O-rings blow on me in a cavern and my training as well as my buddy's training made stressful situation into a minor inconvenience than anything.