DVD players and watching movies online have made learning English an easier thing to do. What's your favourite film? How many times have you seen it? A lot, I'm sure. Well, that's the key to learning English through movies: choose a movie that you like and then watch it over and over again.
It's also important to remember that it's very difficult to watch and understand a movie all the way through, so don't expect too much, too soon. It's a slow process so just try and catch a few new phrases and words each time.
Be sure to have a notebook and pen to write down new vocabulary. Use subtitles to help, but the final goal is to watch it without any assistance.
Expect to hear plenty of slang, idioms and informal English in movies.