As this is the third series, it has become a lecture that I can trust and listen to. It is a lecture that is not too basic, but a bit vague for Linux beginners, but it touches on the parts that are necessary for practical work, so I think it is very good. I am taking the lecture, but after listening to the previous lectures, it seems to be going in the teacher's style. Personally, I am really looking forward to the second part. Looking at the previous lectures, you used VIM very effectively, so I want to learn a lot. I heard that you are publishing a book, so I hope you finish it safely. Of course, I guarantee that you will get good results! Thank you :)