I highly recommend watching movies or television in English. It is the best way to start, as you hear how words are spoken naturally. The best first step you can take is at least hearing the language being spoken, and there are a lot of common words to be heard.
I also recommend animated movies specifically. In animated movies, all voice actors record at the same level, so it is a lot easier to hear characters talking as they are never drowned out by other noise in a scene.