The very first important thing for learning any language is to get use to the tonation and rhythm of the language you are learning. Before you can speak any language you should be able to distinguish the target language from others and know the distinctive feature of it. For anyone who have has never heard or rarely listen Thai conversation, you should start off by going to any source which provide video of Thai language such as YOUTUBE. It doesn't matter if you don't understand at all at in the fist time because the goal is "to tune you ear to what you hear". If you feel this is boring because you have no idea what they are speaking , it's ok to open your language subtitle. This will especially help you in pronunciation and listening skill in the future.