This is a very good lecture for studying vue.js. Since the actual code is provided for each branch through git, it is a great advantage to refer to it and code directly. Of course, if you have taken the previous lecture, the level of the lecture is perfect without any need to say anything again. However, if you are new to vuejs, you should at least understand the "vuejs Complete Guide" before taking this lecture so that you will not have any difficulties. After completing this lecture, there are two regrets: one is about testing and the other is about the backend. Since the author promised to give a lecture on testing in the first half of 2020, I hope that the regret will be resolved then. I have a lot of questions about the backend that is linked with vuejs, and if there is a way to resolve this, it will be an even more perfect lecture. I would like to thank Captain Pangyo for planning a good lecture and working hard.