Learning English as a second language is easier if we use all the instruments and technology we have at our disposal. Some years before, when I began studying English we have only a few methods to study English, but nowadays students have got DVDs that can be watched in English and you can also seen them with subtitles. Watching films in English with subtitles in English or Spanish is a good way of learning English.
For beginners and students of ESO my advice is that you start watching the film firstly in Spanish, secondly you can watch 15 minutes in English with subtitles in Spanish and finally watch at least 15 minutes in English with subtitles in English. If possible you will learn even more if you take a piece of paper and a pen and take notes about the new vocabulary.
One of the most popular films in order to learn English is the Harry Potter Saga: 1st Harry Potter and the Philosopher's (Sorcerer's)Stone, 2nd Harry Potter and the Chamber Of Secrets, 3rd Harry Potter and the prisoner of Azkaban, 4th Harry Potter and the Goblet of fire, 5th Harry Potter and the Order of Phoenix.
If you have seen Harry Potter and the chamber of secrets you can practice your knowledge ( click in Harry Potter's gifs to do some exercises).