There were many lectures that I listened to based on reviews and only learned the basics, or that I listened to because they were cheap but didn't have much depth. In fact, I didn't have high expectations for this Hantas lecture. But for this price and this level of quality, I think it's better than paying hundreds of thousands or millions of won for a regular computer academy or boot camp. Here are a few reasons why I think so: QA questions and answers are posted within a day or two. Also, instead of suddenly telling you something difficult, he explains each part in detail and gives you necessary examples, and I felt like he was gradually moving towards more in-depth learning. Lastly, I felt that instructor Lee Jeong-hwan thinks about his students. There is a group chat room for students who take the lecture together, and there is also a Discord or Challenge. I think the instructor thinks about and challenges a lot for the students more than I thought. I won't say anything more. Fighting to all job seekers and office workers :)