Explore the evolution of embedded Linux over two decades through the eyes of an experienced instructor in this insightful conference talk. Gain valuable insights into the changing landscape of hardware, software tools, and industry trends as Chris Simmonds shares lessons learned from teaching embedded Linux since 2002. Discover how Linux transitioned from a radical choice to a dominant force in many device categories, and understand the importance of continuous learning and knowledge sharing in the field. Examine effective teaching methods, including hands-on learning, live demonstrations, and encouraging questions, while considering the various ways people absorb information. Reflect on the speaker's journey as an educator and the mutual learning process between teachers and students. Apply these lessons to your own development practices and consider ways to contribute to the embedded Linux community through mentoring, workshops, and knowledge sharing with colleagues.