I am going through my AOW and nitrox at the moment and my dive club is organizing a wreck diving trip later in the year, I was told I'm not ready to penetrate though I can cruise along and hang around on the outside
So I want to know, what do one need to do to get trained for wreck diving? Is this a "tech" course?
All of what these other posters have said is true, but it only goes a part of the way. What you need is a diving Mentor who will take their time with you to show you how all the training gets applied in the real world.
Let's put it this way, High School and College "Trained" you but how much have you learned to apply that training from your first jobs?
A diving mentor is an experienced diver, and that DOES NOT mean a diver with all the cert cards, it is a diver with time in the water and has been there and done that.
From your posts it looks like a few mentors are right in front of you as they are telling you that you are not ready. So, go back to them and ask them to help you get ready. They should tell you to go get some training and then come back to us for help in getting the experience to use that training.
Last, and this never gets mentioned on boards like this as some think that the diving training, buoyancy etc., is all there is to wreck diving, start studying how ships are designed, what types of engines and other technology was used at differing times as they were developed. Once you know how they were built you should start being able to figure out how they have fallen apart.
If you do this you may find that you will start reading the wreck. You will be able to say if this is here and the bow is that way, that should be right over here. Or, if the boilers are here and the engine is there, then the bow (or stern) is that way. If you can read the wreck and get lost, most of the time you can navigate back to you entry point by having figured out where on the wreck you started and knowing just about where you are now. And if you can't get back to the line, that is where the training comes in on shooting a bag and doing an independent accent.