Don't worry about what you can learn There will be a master to teach you then. You just need to read more books, ask more questions and practice more. It's actually quite simple. You'll get familiar with it after attending more classes. I think most people in Pizza Hut are of the same age, and they are very easy to communicate. If you don't understand, ask those old employees. They will definitely tell you. Before you become a new person, you must be humble and polite. Things are not as complicated as you think. Those who are trained. You have to believe that your master will teach you well.