I have been developing full-stack for over 14 years, but I always felt like I didn't have much knowledge about development languages or frameworks. I wanted to study, but I didn't know how to study. Then, by chance, after listening to Younghan's lecture, I realized the principles of my habitual coding... and I felt the joy I felt when I first started developing again... I'm still working on a project... and even if I have to work overtime... I try to listen to the lectures at least a little... The lectures are good quality, but they're so fun... I truly respect you... and you work hard to prepare such great lectures... I'd like to express my gratitude through this course review.