I am a junior developer with less than 1 year of experience. I suddenly started working as a freelance developer. Since it was a Next 13-based project, I was assigned to it after watching this lecture. The essential parts that I absolutely must know were explained well based on the official documentation, and the answers to questions were not vague but clear and detailed, so when I looked through the answers given to the students, I felt like I was looking at a separate appendix to the lecture. I felt that they were sincerely helping me fill my lack of confidence with knowledge. As a thank you, I have nothing but this insignificant review. This review is not related to the lecture, but. If you have time, I recommend that prospective/junior developers take a look at the instructor's blog posting. It seems like he has collected and written down the foggy worries that we as developers have, and as you read, you will think about what kind of developer you will become, and you can indirectly experience the process of the company and I choosing each other through the writing. It is fun, and as you read, you empathize and become profound(?). Just by reading the article, you can see that you are a good developer. I am really grateful that you made me question myself, who used to blame myself by just looking at titles like Nekaraku Baedangto. I set a goal to become a developer like Hajo Eun who knows how to reflect on herself and define her own situation and abilities through her writing. You are a good teacher.