I am currently taking the course, and the feedback from the question community is very fast and kind. The fundamental study method of algorithms is to solve problems while studying, but as you said in the video, The solution method itself can be found if you search the Internet, but I think the most important element of this course is the pinpoint attack on the parts you don't know and the answer to questions about those parts. When I used to practice coding tests, I would first try to apply the algorithms I knew, and if it didn't work, I would either do it ignorantly or give up. But after taking this course, I think the concept of whether or not I can use this algorithm depending on the time complexity has become a little more established in my head, so it seems to add fun to studying ^^