What can I say about Young-han's lectures? They're simply the best. I was frustrated because I didn't understand the concept of threads, but while watching the instructor's lecture, I realized, "Ah, that's what they meant in the company back then!" and my understanding improved. I'm ashamed to admit, but as a 3-year employee, I felt that I lacked the basics, so I'm studying from the beginning again. There is a lot to learn, but I haven't been able to develop a habit of studying consistently, so I feel impatient and guilty, and I studied while crying. However, I gained strength from reading the lecture reviews and the comments Young-han left, and I keep reminding myself while watching the messages based on the lecture progress rate. Studying is not easy, but I will keep working hard and moving forward! As an aside, I see Young-han's face more often than my family's faces, so I feel like he's family now. 😊