I have already taken a Django course on a site called Nomad Coder, and I took the course mainly using Spring. I wanted to learn more about Django, so I listened to it, and the course was really well prepared. If you have even a little bit of experience with the web or know basic terms, it is the best for beginners. Most developers usually make PDFs with Markdown, but the pictures, fonts, and example codes were really nice to look at. These days, with the increase in development course sites like Infraon, I often think that the quality of the course itself or the course materials is not well QA-ed, but Jinseok's course was all good.