I am currently a student who has completed about 75% of the course. Although it is a basic C language course, it also provides in-depth explanations to help you understand various parts such as data structures, operating systems, and compilers that do not seem basic. At first, there were quite a few parts that were difficult to understand when I listened to the lecture, but after finishing one chapter, I was amazed that I understood it. After listening to Mr. Ttaebae's lecture, I am reviewing it with another book, and it was amazing that I was able to progress through the book easily since I already understood everything. If there are students who are worried about the basic C language course, I hope you don't worry and take the course. The lecturer is good and the voice is persuasive, so I believe that you just need to learn as you teach. Additionally, when I listened to the lecture and there was something I didn't know, I went to the community and most of the questions (99%) that other students asked were things that I didn't know, so I was able to get help without having to ask questions separately. It seems like there are a lot of students who are working hard :) I want to finish it quickly and go study the appendix. Bye Bye