How do I improve my listening hability?

Hi I´m Joselin, I´m learning English for much  some time now but when I listen to the pronounciation in different kind of audios it´s hard to understand because the pronounciation is very fast and I confuse the words in special especially when I take a listening test. I know that I need more practice every day daily practice. Sometimes I watch different programs in English like series or sitcoms.