Kihyo, I listened to all 4 lectures from the basics to the practical lectures of Vue.js. Personally, I am very satisfied. It seems like a smart and nice-sounding guy is teaching. While I was working, I studied consistently for 1-2 hours on weekdays and at a cafe on weekends. I ended up listening to all the practical lectures. When I had questions about error handling, they answered within a day or two, so I am very satisfied with that part. I recommended it to people around me, and they all already know about it. He is the father of Vue. Haha. I want to listen to the React lecture, but it is not there, so that is a shame.! Please make a React lecture too~