I listened to it briefly a long time ago and am going to listen to it again, but I will not write down the regrettable parts separately because they are in other course reviews, Good points 1. The feedback was very fast. I always got an answer within a day, or at most two days. 2. Appropriate level of progress? It is not very deep, but it is not too shallow either, and it goes into grammar, usage, and introduction to useful libraries. As is the case with these lectures, even if you understand it, if you do not try to make something using it yourself, you can only listen to it and move on. But if you try to make something with it, it will take a long time, so I think it would be good to just listen to it over and over again and learn the basics.