I did my apprenticeship in a book store in Germany, which means that I went to school for 18 weeks in total over the three years and worked in the shop for the other time remaining.
I learned how to work in customer service and how to use a cash register.
I worked in an Italian Restaurant in Germany over the summer where I was mainly a waitress and if necessary (when a colleague was ill for example), I worked as a barista.
I usually talked to the customers to get their orders or, as a barista, I was in charge of the drinks (mainly just wine, soft drinks and coffee). I also sold ice cream.