Ni hao, Harmeet. For a beginner, it’s good to listen to the Chinese people around you and practise with them. But you can go step by step, Chinese tones are always the difficult part for all the foreigners, not only for you. At the beginning, you will doubt your pronunciation and make a lot of mistakes. Don’t worry, you can learn from this process. Trust me! If you meet some problems, I can help you. jia you(come on)!