Any skill, including comprehension of the English language, you need to train. Because at first it seems very difficult, most of the students are trying, consciously or not, to leave these activities for later, first try to learn English grammar, pronunciation, learn new words, but avoid listening. But no skill is impossible to master in theory, another-practice. You can't learn to swim just by reading about how to do it.
Surround yourself with English speech as possible. Using the Internet, listen to English radio programs, watching English and American films without dubbing, use the training audio. Having to make time for it - just listen while washing the dishes, Ironing clothes, making cleaning. Even if you don't understand the individual words or unable to say what it was, thanks to this hearing, you get used to the pace and style of the language.
Try to use interesting materials to help you someone more suitable to listen to English news, someone can spend hours listening to songs of English artists, to some it seems more useful and effective to listen to a special teaching texts, and someone sees sense only in direct communication with friends.
Exercise regularly, make it a rule every day to devote to listening for some time – how much work, but the more the better.
Getting started listening, don't forget about training other skills – grammar, reading, speaking, writing. To get the maximum effect when learning a language, need to be addressed comprehensively.
When you deliberately listened to the lyrics, stay focused but not tense. Fold images, pictures based on familiar vocabulary, not paying attention to strangers. This is a common error – they hear a strange word or phrase and thinking that it means missing the point completely and desorientada in the text, although these words may be totally unimportant for understanding the meaning.