Practise inferring meaning:
Find a YouTube clip from a popular television show, for example Friends. Now, rather than watch it, just listen to the dialogue. How much can you infer about what is taking place, who is talking and what their relationship is? Now listen to the clip a second time but watch it too. Were your conclusions correct?
Tip:
The next time you hear a word you don't understand, try to guess its meaning using the context or situation to help you. But don't worry if you don't get it the first time. As with everything in life, the more you practise, the better you will get.