I took the course after learning React and Node once. Overall, it was good for reviewing what I had learned before, and I was at a loss as to how to connect and handle React and Node, but I learned how to transfer server and client data with Axios. However, the only regret was that the font of the instructor's IDE was too small, so it was not easy to read when watching the lecture on my tablet. And since the instructor tried to cover a variety of topics in a short class, I couldn't understand the code for the Redux part at all, so I looked back at the lecture I had seen before. I didn't even know that using Amazon S3 meant using Naver Cloud. It was my fault. Lastly, I haven't received an answer for two weeks even after posting a question. Is the instructor busy? ㅠㅠ.. Since it's a paid course, I wish he would put more effort into answering questions. Still, it was good to be able to grasp the big picture of how to use the front, backend, DB, and external storage.