I really recommend this class. I am the type of person who studies by watching the same class over and over again. I have taken many React classes. I think the way the teacher speaks is very important, and if you listen carefully to what he says, you can feel that he is very logical and explains only the key points without any unnecessary details. Also, his coding style is very clean and nice. It doesn't seem to be updated to the latest version of React, but if you want to study a solid foundation, it's a really good class.