Learn by yourself. If you work hard and do more, the master will certainly appreciate you and teach you attentively. Do what the master tells you to do well, and do what you don't get. I think all walks of life are the same, starting with the most basic work, and then developing to a deeper level after you have learned the most basic skills.
At first, I went to the general to do odd jobs, kill fish, wash vegetables, and so on. Then prepare dishes, watch the steamer and learn to cook staff meals. Finally, I went to the kitchen. This process is very long, at least three years. In this process, we must pay attention to handling the relationship. Especially the chef in the kitchen. Generally, the chef in the kitchen has several unique skills ~