Hi! Listen to songs & watch shorter videos first, without subtitles. Don't try to translate them to your mother tongue, just listen without thinking and be happy when you recognize a word or phrase. You will realize it will be easier each time. Then you can watch films & series, but I suggest first you watch them without subtitles, and then with English subtitles. Thus you will be able to focus on what you hear, while watching it for the second time you will be able to understand what you missed before. Developing your listening skills requires practice, but you will see that you will understand more and more each time.

I suggest you get a one on one teacher who works with starting students who is a native speaker. They can help you the most. Nothing beats practicing what you are learning regularly.

Tino: You can begin listening to recordings of speech or song, for which you have the printed text. Song lyrics work well for that. Find the text for the lyrics of a song and begin listening to the song until you can pronounce the words. There are printed texts for simple things such as Nursery Rhymes and children's stories. Once you master the vocabulary you can upgrade to other materials such as recordings for speeches. As you study, employ the technique called "concept mapping" or "mind mapping" to build your vocabulary. Keep notebooks and write sentences when you can. Shift to reading nonfiction when you have an intermediate vocabulary to build your word base further still.