Superchuck said it all. There is nothing more infuriating (and ultimately doomed to failure) than a shop keeper who knows nothing about the products he/she is selling.

Know your stuff and NEVER compromise the reputation of your establishement by selling second rate cigars.

Having said that all this is pretty obvious isn't it? I'm sure you know all this if you've been in the business for so long? (And now teach as well!).

Still, all the best.