What sort of department will you be in?
I am not familiar with Ritz... Will there be film processing, or sales?
Maybe have a read up on filters, what they do...
Different cameras
Different lenses
Generally if you form a nice bond with a camera, its easy to sell them! All you have to say is, "if I was buying a camera, it would be this one".... Have a couple of reasons to back that up.
If you are working in the processing side - they should teach you everything you need to know.
Maybe look into a couple of debates:
Film vs. Digital
SLR vs. P&S
don't bother with nikon vs. canon though... it won't get you anywhere (cause we all know canon is better. hehe)
Maybe with the film vs. digital argument, look into things like the cost of shooting a roll of film (find out the cost of the film and the processing) and then find out the cost of a digital print in your area, multiply by 24... you can see the difference in cost of shooting either.