Checkout StartUpsForTheRestOfUs.com podcast, it has a lot of great info, start with greatest hits and then the archives. You can start out as a sole proprietor

Checkout StartUpsForTheRestOfUs.com podcast, it has a lot of great info, start with greatest hits and then the archives. You can start out as a sole proprietorship. Get an EIN number from the IRS website so you don't use your SSN. Use stripe for your payments, you could create a separate business checking account but not 100% necessary till you start making sales. If your software takes off, then think about an LLC or other structure.