Learn a language
without studying

We don't acquire language by speaking or writing, even when we get our errors corrected. Rather, the ability to speak and write fluently and accurately is the result of language acquisition via comprehensible input, such as good books, movies and interesting stories.

Using subtitled movies clearly enhances the learning of new vocabulary...it is noted that these results are generally congruent with current theory in the field

...it can be concluded that the use of movies with subtitles can improve students’ engagement in learning and retrieval of new lexical items

Since foreign subtitles seem to help with adaptation to foreign speech in adults, they should perhaps be used whenever available (e.g. on a DVD) to boost listening skills during second-language learning