I don't know much about other frameworks or libraries because I haven't learned them yet.. MongoDB, GitHub, Express, etc. that we learn together to do React For beginners, it may seem easy but difficult! At first, I was confused and thought, "Is this really a beginner's course?" Of course, I want to bow to you and thank you for teaching me so much for free ㅠㅠㅠ..! I think that for those who are really beginners and think that a course that only explains React grammar one by one and teaches it like a recitation will be a factor that can cause them to drop out in the middle..! However, if you don't give up and learn, you will think that this course is better than most paid courses..!