Most of the films I watch I get from Blockbuster Online. I've had it for about three years and absolutly couldn't live without it. It's only 20 bucks a month. I only purchase films if they're on sale or just inexpensive, or if I can't rent it.
Hey film is a journey and you will be able to develop your tastes once you discover and find out what you like. I've only been serious about cinema in the last 4-5 years when I discovered French films.