According to the roadmap, I think it was a good idea to listen to everything from 1. Understanding Bootstrap 2. Bootstrap practice 3. Creating a responsive website without Bootstrap. I was trying to create a website, and these days, everyone is making websites responsive, so I made up my mind and started. I completely understood responsive website creation in about a week, even though I didn't even have basic concepts. In particular, as I listened to the lecture while creating a webpage following the practical part, I gained the skills and know-how to create a responsive website without realizing it. I'm going to listen to it again and review it. This is the most cost-effective course among the recommended courses for creating webpages.