To know their products, mainly the machines and software they sell. To follow through with classes on learning all that we could be with the machine. As with any craft in life....learning the short cuts and the ends and out is what makes you successful. This will also make the shop successful, because you are then willing to advertise them and their products.
Put this in terms of this board....who can't say they haven't learned something here. What have I done...recommended to my friends this is the place to be. I have learned so much just through reading the post that are made.