Need help setting up an Amazon seller account

As a experienced Amazon seller, I need help setting up my seller account. This includes product listing and optimization as well as handling my Amazon FBA, or Fulfillment by Amazon. My current status is that I already have an Amazon account and require assistance with both product listing and FBA. I would appreciate the help of a skilled freelancer to help get me started on the right path and ensure all processes are handled correctly. Thank you for your time!