I have been diving for about 2 years now. Have my OW cert and most the basic gear.
I am interested in doing some cave diving and have a couple of questions:
1. What additional training is required?
2. What additional gear is required?
1). Most agencies have cavern, intro to cave and full cave. Some have just 2 levels, others have 4 levels. Then the question is, what do you want? Just stay in the daylight zone, or do you want to go further in caves? Most times you don't know already.
There are 'zero to hero' courses, then you will get in about 8-10 days to full cave. Yes, it is possible, but only if your skills already on a high level. As ow diver you have normally a lot to learn (aow cert, nitrox for example just in the sportsdiverarea and then transitioning to doubles, wing, longhose, hogarthian backplate, maybe drysuit, etc). Learn new finkicks, etc. I had 2 years a certificate too when I decided to do a zero to hero cave course. But I was already diving with a twinset, wing, drysuit, longhose, etc. Trim, bouyancy and finkicks where already good enough too.
I don't say you are not diving good enough, nobody can see this from behind a computer. Maybe you are good enough. But for cavern you need to have AOW most times, so start with that. And take nitrox too. And start to practise the frogkick and so on if you are not used to dive with this finkicks.
2). Cavern can be done with a normal bcd and single tank. You need to have some lights and a reel/spool. And as I said an aow cert and I would prefer nitrox too. Intro to cave can be done with a single tank, but I won't prefer. Full cave means absolutely full technical equipment. And it is not only owning, but you need to be used to dive with it. Maybe you need a drysuit too, so used to dive a drysuit is another prerequisite then.
When a person wants to start a techcourse with me, I try to dive with them before starting to see how they dive and then I can advice them.