Personally, I think it would be better to combine the theory and implementation parts and sell them at a higher price. Even though it is a lecture aimed at people who know the basic concepts, it is true that the content is lacking compared to the price of the lecture. I think it is unprofessional to omit the part about loading from a folder due to image copyright, as you are a person who writes books about handling data. I think you should have prepared at least 10 images without copyright issues and added the part about loading them directly from a folder and processing the images. However, for those who have a basic understanding of PyTorch, it seems like it would be good to quickly review it in detail. On the other hand, for those who have no idea what PyTorch is or how it works, I recommend that you study a little more and then take the lecture.