I listened to it while I was on government scholarship, but I couldn't listen because I was working on a project, and after graduation, I did something else and came back to my senses and completed it. Even though it's a free lecture, the quality is high and the explanations are easy to understand, which was good. Since Younghan uses a MacBook, I had to look up the shortcuts separately. But since I have to know those anyway, I'm going to learn some good shortcuts and go to the next lecture to conquer Spring. Let's all get a job.