Bricklink Q & A with Blitz's $18 Free Shipping

I am joined by other Bricklinkers and field their general questions on how to operate a Bricklink store.
I am Joshua with Blitz's @ https://store.bricklink.com/Joshua.Burrier#/terms
Joined by:
Austin with Badger's bricks @ https://store.bricklink.com/Badger_Tech?p=Badger_Tech#/terms
&
Donnie with ABCBuilds @ https://store.bricklink.com/ABCbuilds#/shop