1. Learning Materials The folders are organized to match the lecture curriculum. The lecture start and lecture completion folders are separated, and each folder is set up so you can start cleanly with a new project, making it really useful when you want to partially learn content you don't know. There's also a method of organizing source code sequentially with git, but for learning purposes, this strategy seems to be the best. Of course, it must have taken the instructor quite a lot of time just to organize it this way. 2. Options API, Composition API Among Inflearn Vue lectures, there are no cases where both are covered in one lecture, but this lecture covers both types, and although it said it would only cover the essentials, it explains a wide range compactly and clearly. 3. Authentication The authentication part has some tricky aspects to teach, and most instructors only cover the authentication part roughly, but in this lecture, since you build both backend and frontend directly for hands-on practice, you can solidify your understanding of concepts related to JWT accessToken and refreshToken, which are most commonly used recently. 4. Teaching Skills The teaching skills are excellent, so the immersion is good, I've taken most of the Inflearn Vue lectures, and this was the most satisfying lecture, and if you're starting Vue now, I recommend not wasting time taking this lecture and that lecture, but finishing with just this one lecture.