I have completed the course, but I am writing a review now. I am a non-major computer engineering master's student who studied the course. I am writing this review with the hope that it will be helpful to those who are considering taking the course and with gratitude to the professor. I would like to summarize it first, saying that you should not hesitate to take this course. As I mentioned above, I took the course without knowing anything about programming or computers. I really liked the professor's ambition to create lectures on YouTube. "People who have taken my lectures can trust and work together" (I wonder if that is accurate... maybe it is embellished?) I would recommend that you take this course even if you do not have basic knowledge. This is because the lecture proceeds with the lecture by first explaining the contents that may be confusing later (memory association, operating system operation, etc.). Later, the pointer part, which may seem difficult at first, will be mentioned several times, dozens of times in advance in the pointer lecture. I think you don't have to worry. --Impressions on additional learning after completing the C language course-- It took me two weeks to complete the course. I kept up with it. Two weeks later, I went to take a computer science and C++ language seasonal language course. I will take the final exam tomorrow (Monday), but my midterm grades are in the top tier. I was able to proceed with C++ without any difficulties (of course, if I got stuck in the logic part, it would be a problem, but in terms of grammar and understanding). (In fact, I was helping undergraduate students who were majoring in it.) I am slowly taking the necessary parts of C++, starting with object-oriented language, but I personally recommend taking the C language course and then approaching C++. My opinion is that if you have mastered C and C++ to a certain level, you don't have to worry about other languages. I am also learning Python because I am greedy, but most of the content is skippable, and if it is short, you can learn other languages in a few hours or days. After all, when you learn a low-level language and then approach a high-level language, you feel like, "What's so easy?" It felt like I was releasing a sandbag after exercising. For those who hate writing in a long paragraph... 1. I recommend C++ after C language, and you don't have to be afraid of not having a basic knowledge. (Assuming that you are completely blank, the lectures in the beginning of C language and the stories about memory and OS operation that come up here and there will help you understand.) 2. If you do Professor Hong Jeong-mo's C language properly, you will feel like C++ is just a little bit of a stretch. 3. If you learn C language/C++, you will learn other languages quickly. 4. Feedback on questions is fast. (The professor is diligent. However, you may be asked to think again, and it is up to the student to find the correct answer.) 5. He explains in relation to the field. (Please always mention how to use it, some are old and the current trend is to use it this way, some are individual differences, so it's a difference in coding style, some are right and wrong, some are still ambiguous and there is no answer, etc.) 6. If you don't mention the disadvantages, I don't trust you, so I will mention them as well. The lectures are crazy detailed. It can be an advantage or a disadvantage... It's incredibly detailed. I only listened to the lectures and looked through the book to see how it was, but you really teach everything. 7. A huge amount of lecture time and lack of lecture materials (50 hours... Most online lectures, not even college classes, don't teach like this in one semester. Especially if this is coding, you have to spend X2 hours debugging, typing lecture material code, and taking notes. As you can see from the title, you learn by following. I think it should include following along and correcting mistakes where you made a mistake.) P.S. I should have listed it in the advantages.. The tuition fee of 77,000 may be expensive, but I thought it was a seasonal class fee and bought it. And I also took a computer science class as a seasonal class, and it's different value. Rather than just going through the superficial and mediocre classes, buy it all at once! Thank you, professor. Thanks to you, I'm building a good foundation.