I have already read the professor's book, "Lee Deok-woo's Unreal C++ Game Development Essentials", but this lecture was helpful on another level. This lecture provides new content that was not covered in the book, and this information was a great help in solving many of the questions I had while using Unreal Engine. Thanks to this lecture, I was able to increase my understanding of Unreal Engine. Therefore, even if you have read "Lee Deok-woo's Unreal C++ Game Development Essentials", I highly recommend taking this lecture.