I paid for the lecture to listen to it twice after listening to the live lecture a while ago!! TS Who said it was easy!?? Java developer? C# developer, please be quiet. I am a junior developer who has never learned a typed language and has been suffering from dust-like worries and agony while working on TypeScript. Errors lead to errors... and eventually, only codes that exclude errors pile up... I listened to a lot of famous lectures and studied the docs, but Even well-known lectures often explain the grammar in the docs (if you understand it by just reading the handbook, why bother?) and the examples lack depth + new content is missing, so I was disappointed. Without a general understanding of TS, I was in a hurry to fix individual types or errors, so my skills did not improve and I just sighed more and more. At that time!! I went to spy on Zerocho's lecture because the alarm went off, and when I came across the lecture, I was so shocked because it was so good. I felt like I was being compensated for the past N months of suffering because of TS?? Ah, this is how you should study TypeScript!! I felt that. As shown in the course introduction video, this course was especially "renewed" after receiving feedback from students, so the parts that covered practical materials and analyzing actual library types were overwhelmingly good. Also, it seems to be especially good for people who have tried it a little bit like me but are having difficulties, rather than people who don't know anything about TS at all. For those who don't know anything about TS at all, I recommend reading the TypeScript Handbook and starting. I would like to thank my teacher again for working hard to edit and upload such a great course!