The company implemented the front-end with Vue.js. It was difficult to do without any knowledge of Vue.js. In order to use it for work quickly, I purchased the Vue.js Complete Guide and applied it right away while listening to the lecture. However, since I did not have basic knowledge, there were many cases where I used it without knowing why I had to use it. Basic knowledge is essential. When I heard that a new lecture was released, I purchased it right away and finished the course in one day. The lecture was good to listen to because it paid attention to the clear voice and the details that were considerate of the user (icon enlargement, subtitles, learning materials, etc.). I am looking forward to the next lecture.