Nap, I'm listening to the lectures of Spr so well. I'm learning the basics of the web and the basics of how it works. Before MAF comes out, I have something I really want to suggest...!!! Please don't worry too much. 1. There are many times when the flow of the explanation suddenly changes in the middle. 1-1. For example, there was a part where you were explaining the transition from RequestHandler to POJO and then suddenly started explaining from the very beginning of the request. Repeated explanations are welcome, but there were many cases where the explanation was repeated in the middle and the flow was interrupted, so I had to listen to that part over and over again. English pronunciation is a big difference between individuals, but I was very nervous while listening. I would appreciate it if you could pay a little more attention. 2. I think it would be helpful for more people to learn the basics if you added a little more CS (Computer Science) content such as network knowledge to the principles. I would really appreciate it if you could consider it a little more.