I usually like to spy on the instructor's SNS account, and when he introduced the lecture, I quickly read the curriculum. I was doing a vanilla JavaScript-based project while preparing for a job, and while doing the project, I often thought that my JavaScript skills were still not enough! This lecture provided insight into how to implement convenient functions in libraries & frameworks in JavaScript, and concepts that are difficult to study alone, such as TDD and npm distribution. While studying FE, I vaguely knew about the concepts but wanted to learn them in detail, so it was good to follow along with the instructor, which helped ease the burden. This lecture is recommended for those who quickly moved from JavaScript to React or started developing with React but are stuck. This lecture is useful even now that I am preparing for a job, but if it had been shown to me a year ago... when I was desperately craving insight, I think it would have been a lecture that I would have applauded. The instructor is very considerate in many ways, from the fact that he manages students through a separate Discord to the fact that he distributes discount codes for job seekers! I recommend it! (And the cat that appears briefly in the video is cute too. ☺️)