Apple Stores provide valuable lessons in user onboarding, with their customer-centric design and focus on engaging visitors at every step of the journey. Three key onboarding lessons that SaaS products can learn from Apple Stores include: 1) Engaging users right from the start by asking about their needs and offering personalized assistance; 2) Modeling the product in full swing to demonstrate its maximum potential, rather than presenting a blank slate; and 3) Making help centers approachable and welcoming during onboarding. By implementing these strategies, SaaS products can enhance user experiences and improve customer retention.