K-Gavin King A lecturer who fits this description, a lecturer with the sexiest dialect in Korea, a lecturer I want to add as a dependency to my project To those who are considering paying for a lecture 1) This is an excellent lecture. Above all, the moment you think, "Oh, this part is a bit difficult?", he explains it in a way that even beginners can understand. Some people may think, "Huh? Isn't that what a lecture should be like?", but that is an ability that even "educators" who have studied education do not easily have. It is impossible without a lot of lecture know-how and a high stack of communication with students. 2) The tone of the lecture is really good. In fact, lectures that read stiff scripts without any empathy can make the listeners feel bored. But this lecture is different. The dialect that flows out from time to time, and when the instructor becomes one with JPA and the tone gets higher, the listeners will also feel like they are K-Gavin King at some point. 3) The feedback on questions is accurate and fast. If you specify what you are curious about, he will explain in as much detail as possible. In fact, these three lecture reviews are about the lectures, but I also felt a lot about the book. In my personal opinion, I think a lot of effort was put into writing the book to make it easy for readers to read, easy to understand, and above all, to make them think deeply about JPA. If you buy the book and take the lecture, I think it would be more effective to read the book first, and if it is really difficult and too difficult to understand on your own, find the lecture sector you want and watch it. This is a lecture that helps you think.