Just study at home. You can learn some home cooking first. Ordinary dishes can be cooked with some common seasonings such as oil, salt, soy sauce, pepper aniseed or thirteen spices. As long as you have a good grasp of the amount, you can eat it when it is basically cooked. You can slowly search for some favorite dishes from the internet. As long as you follow the tutorial step by step, you will be skilled after doing it a few times. It's not that hard. Just do more.