HI - I'm not a fella, but I'll try to help how I can
First, welcome to ScubaBoard and to our enormously helpful UW Photo area
![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
There are a great number of members here using all sorts of systems in all sorts of diving conditions, so you'll find answers to pretty much any question you can think of relating to diving and taking images underwater!
Second (why did I start numbering LOL), check out the fabulous Sticky at the top of this forum (you can get there via the Pink Link in my sig, too). Inside you will find all sorts of things from getting started tips and tricks, to choosing a camera, to where to shop and find reviews and prices, to links on various models of specific cameras with discussions and images. All of the information has been contributed by our fine members and I try my best to keep it up to date as new bits are brought to my attention. I hope it's a useful reference, not only as you are starting out searching for a system but through your whole photo adventure.
Third (more numbering, I can't stop myself this morning), you are likely not going to be able to have a camera on you while you are doing your training dives. Taking underwater photos is what is known as "task-loading" and you will need to be concentrating on the basic, foundation skills you are learning and developing during your course - not adding more things.
The very best thing you can do for your underwater photography is to establish excellent diving skills - and the only way to get those is to learn to dive and practice
sans camera until you have them down pat. A little search in this forum will find some referenced posts with various people's ideas and tips for staring out diving and then adding a camera - some think you need 100s of dives, some think it's OK to start pretty much right away. Each diver is different, but the discussion is a very good place to get a jump start on the whole matter.
Have fun!