This is a great lecture that clearly shows what Langchain is, how to use it, and what features it provides! I'm currently on my second viewing. Each video is under 10 minutes on average, making it easy to watch and perfect for light viewing during commute times. While more detailed content requires looking at documentation or diving in directly, you provided an overall overview that helped me grasp the important concepts through this lecture. Thank you! I'm planning to purchase other lectures this week as well! Please consider a discount for the Flutter lecture too..😭