I wanted to learn about TypeScript grammar and use it with React, and I happened to hear a hot new lecture that had just been updated. I had used several APIs in the past, but I had almost just copied and pasted them. However, through this lecture, I learned how to use the official API documentation, and I gained confidence that I would be able to find and use the functions I need in the future. Also, TypeScript is not difficult, and the explanation is good, so I think even beginners will be able to follow along easily. Thank you for the great lecture :)