Ask HN: How to onboard yourself to a new product/industry in a new job?

This Hacker News discussion reveals practical strategies for engineering leaders and individual contributors to rapidly onboard to new products and industries. Key insights include conducting strategic one-on-one meetings with team members, actively immersing yourself in the product through hands-on use, and leveraging multi-modal learning approaches like creating personal knowledge documents and using AI tools for initial domain understanding. Contributors emphasize the importance of asking thoughtful 'why' questions, building relationships across teams, and maintaining humility while giving yourself 6-12 months to develop competency in complex new domains.