I don't know what you mean by saying that you can't do the practical training just by watching the lecture. And I think you have some expectations related to the book, but it is separated from the book and is not designed to be 100% related to the contents of the book. The book is fixed, and the lectures can be updated continuously. I think you are dissatisfied with the lectures being updated. I think you are dissatisfied with something that I can't figure out exactly... I would like to suggest that you consider canceling the lecture. +(Additional 1) The reason I recommended canceling the lecture is because it is difficult to fix that part. The lectures will continue to be updated and changed, and I think that will be helpful to the students. That's why it may be different from the book. Also, I think that delivering the same content as the book (3 years ago) is more considerate to the students. +(Additional 2) If there is something that you can't do the practical training just by watching the lecture, please let me know so that I can take action. (As for the password part, I tested it on various platforms and dozens of times, and it doesn't appear as <if you copied config.yaml>, but if it does appear, it is written in the note below so that you can enter the password.)