It was good at first, but as I went on... The table of contents of the lecture was well done. Overall, I think the content was organized step by step well. However, there are many shortcomings throughout the lecture.. I will write a few words for the instructor to refer to when making improvements in the future. 1. The noise from everyday life is too annoying. It seems like the recording location is at home, but it is an inconvenient factor that greatly reduces the concentration of the lecture. 2. The part where the mouse pointer is explained moves too quickly. The text drawn with the mouse cannot keep up with the speed of the explanation, so it becomes almost useless text, and the pictures drawn are also swung around too much, so it is mind-boggling.. I don't think it helps much in understanding the lecture. 3. In the beginning of the lecture, the content was explained and the basic parts were appropriately skipped, so I felt like the lecture was well prepared, but as it went into the middle and the latter half, I saw the instructor going around and around as if he was explaining something that was not prepared for the first time, and so I felt like the explanation was getting more and more sloppy. So, as the middle part passes, it becomes increasingly silent and it seems like they are trying to finish the lecture recording quickly.