I'm revising my rating due to the renewed course. 2.0 -> 5.0 [Previous Review] I don't know who the instructor is - I wish there was information available. Also, regarding the audio issue that many people have pointed out - it's too quiet, and if re-recording is difficult, I hope Inflearn could take measures to address this. Lastly, about the Q&A board... if the instructor can't respond, I wish Inflearn's experts could answer on their behalf. While I'm satisfied with the course content, I think the site has insufficient overall management of the courses. It's quite disappointing compared to other online learning platforms.