Secondly, as a waiter in a western restaurant, you should know the culture and etiquette of western food, as well as the professional knowledge of western food and simple English.
Finally, we should have a certain understanding of beef, sirloin, filet mignon, scapular meat and steak. That is to say, you should know something about kitchen products in order to sell them to guests, and you should also know a little about red wine and coffee. These can be found online.
Larger restaurants will have a set of training programs and service processes, so you just need to study hard and let the guests have satisfactory service. Keep improving your professional level, and you will succeed.