how to start a fba business requires strategic planning and market understanding. First, you need a product idea backed by data from tools like Helium 10 or Jungle Scout. After validating demand and sourcing a supplier, create a brand and develop packaging that aligns with Amazon’s policies. Set up your seller account, list your product, and create a shipment to FBA. Once inventory is received, Amazon takes over fulfillment and customer support. To grow, focus on optimizing your listing, running ads, and gathering positive reviews for credibility and ranking.