If you don't know the basics of HTML and CSS, you won't be able to understand anything. Since it goes straight through without a brief explanation, you'll have to keep looking it up even after following along, so I think you should watch it with some basic knowledge. It seems more convenient to watch it to quickly pass the practical exam in a short period of time, and there are more contents that can be used usefully when actually creating a website. It uses more diverse structures than other lectures, so it can be convenient when creating an actual website. However, those who want to quickly obtain a technician's license almost always memorize it and proceed, but if you don't follow the overall flow properly, you won't be able to use it, and it might be difficult to memorize it and apply it in a short period of time because it's complicated. I'd like to recommend it to those who want to slowly understand the flow and create it more conveniently. I think I'll only use the brief parts for now, but I think it would be good to continue studying by looking at it again when I actually create a website later.