I'd also recommend selling online BEFORE you decide to go into a brick & mortar shop ...
I used to co-manage a LQS and there is SO MUCH to deal with when you open a store front. Leasing, rent, insurance, utilities, advertising, store help, classes, teachers, etc ...
I have several friends who've started online sales, are doing well and very HAPPY that they did NOT open store fronts as first planned. It's a good way to START and see if you like it ! :)