The lecture quality is somewhat disappointing compared to the good lecture materials. The instructor is just busy reading the text in the PPT materials, and even if there are mistakes, they are all recorded in the video. He repeats the same words or reads long stories straight through, and if that were reduced, the video length would be reduced by half. It would have been better if the video had explained helpful stories that cannot be seen in the PPT. I didn't feel much of a difference from just watching the PPT materials. It would have been better if he had explained more about things to watch out for while working, or his experience as a practitioner. It would have been good to show the editing process directly when explaining PPT functions such as 'point editing', but it was disappointing that he just explained it in words. The data screens in the 3rd lecture video and the uploaded class materials are not synchronized. ('Achievement Page' ↔ 'Achievement Page')