You may want to start by trying out a roll film camera that can shoot 6x9 format and crop it. This will teach you how to use a meter properly, scanning film, and use a manual camera. There are pretty inexpensive cameras out there that could shoot 6x9 like a Mamiya 23 or an old folding camera. You could probably learn 80% of what you'd need to learn that way and you can always sell the camera at the end if you wanted to.