After I establish that I'm using a name other than mine so I will need a D B A ? ! Then I will need a Sellers Permit or Vendors License to sell on line . Will I need a E I N where I live or can I just use my social security number to file taxes at the end of the year ? Also should I go through legal zoom or similar or should I find these forms on line . If so where on line should I begin to start a legal business . Thanks !