Hello, God Younghan, I am listening to the Spring Basics and MVC Pattern 1 lectures. I am currently listening to Domain Analysis and Design, and I was very confused because there were a lot of annotations that I had never seen before, so I am going to follow along in a wild style. First, listen to it once, listen to the JPA Basics, and then review the Practical section. I think I will understand it better..?? ㅎㅎㅎ And I am also reviewing the HTTP lecture again, but the tension is very different from this lecture... I wonder if it was hard for you these days. The voice in the HTTP lecture is very cheerful, but the Practical lecture feels a bit sluggish? Fighting anytime!!