Train yourself first on brewing coffee, tea, or whatever beverage you will serve. Be a geek about everything that you are selling. Learn everything you can about the coffees—the altitude of the coffee plants, the coffee varietal, name of the farm, cupping notes, and recommended brewing styles. Read every book, search the web, and ask a plethora of questions about your product. You should be “the expert” about your products. Also share your knowledge and passion about coffee and the cafe with your staff. If they’re not passionate about your product or services, they will not help your bottom line.