a lot has been said and i agree with most of it, but i think that what might also help is if you took some photography classes, maybe a class in 2-d design so that you learn about composition. with photography, you learn various aspects of light and how it interacts with film.
i went to art school, did some PA work, and then AC'd for a while to get to learn the equipment. i found that the most important thing is to learn how to light. who knows, by the time you start working you might be working in HD, but if u can light, it doesnt matter what the medium is.
its a bit rambly, but i hope it helps.