This is a lecture that explains in an easy-to-understand way the parts that "as a web developer, it would be good to know this much." The lecture time is about 5 hours and 40 minutes, so it is not too long or verbose, but it is also the best because it includes all the key points, so you can understand the concepts of HTTP without any burden. This is a lecture that you should definitely take if you don't know much about HTTP, and even if you know a little, it is a good lecture that you can watch without any burden as if you were just watching a development-related YouTube video to review.