Hello. I am an undergraduate student who is hoping to become a backend developer. Since I am not a major, I did not have many opportunities to take network classes, so I studied mainly on my own. I happened to take a class based on a YouTube lecture, and I am really grateful that you explained it so well that I could understand it! I mainly study main development-related subjects, and I watch the teacher's lectures on the way home and while eating. I think I can understand the courses that I used to just memorize easily now that I am learning by listening to the explanations and reading the text. After I finish the lecture, I will definitely take the next lecture. Thank you!!