where to find them, how to sell yourself to them using their sales reports or forecasted sales if they aren't selling on Amazon already, organising a trial run to build their trust in you, negotiating your commission
how to become a user on someone else's account so you can access multiple accounts from one portal, PPC and how to structure the costs, how to create listings and optimise the storefront
processes, streamlining and outsourcing; Tools to use to automate your business, templates for listing creation, how to link to alternative ecommerce platforms (Ebay), how to invoice the brand and run your accounts, how to scale up