I saw the HTTP lecture during the Infraun sale at the end of December 2022 and liked the lecture style, so I bought all the lectures, but now, a month later, I'm going to listen to the rest of the lectures. I thought I bought this too, but it was a free lecture? The quality is so good that I didn't even realize it was a free lecture. In the meantime, I somehow made the project run as required, and I used it by finding and using what I needed at the time, and I thought I thought about the exceptions and wrote it well, so I thought I knew and used Spring Boot. While listening to the lecture, I saw that I couldn't immediately think of the parts where each technology element was connected, so I was definitely using it without knowing it properly. I feel like the flow of my scattered knowledge has been connected through this lecture. Now that I have the big picture, I think it would be really good to increase my knowledge of detailed technologies through other lectures and organize my existing knowledge. In fact, I had a bad perception of lectures from my experience in college, so I preferred books. My thoughts changed a lot after watching Younghan's HTTP lecture, and I think they have definitely changed through this lecture. It's just that I watched a weird lecture. I'm going to watch all the lectures after I become a fan. Thank you.