It was very helpful because the lecture didn't just show how to implement functions, but also explained why these structures and architectures are used in practice.

Rather than just explaining how to use React, you explained the internal workings and the reasoning behind its design in an easy-to-understand way, allowing me to truly understand it rather than just memorizing it.

It's so easy to understand!

I have been developing with JavaScript and Node.js for a long time. However, until now, I focused only on using the features and didn't deeply understand the internal principles. In the AI era, it feels like I'm spending less time analyzing code myself, let alone digging into the underlying mechanics. But after taking this course, the code I used to be so familiar with has started to look completely different. Code that previously felt overwhelming to look into because of its complex structure now makes sense naturally in terms of how it operates. To be honest, I had studied using many other courses and YouTube videos before, but it always felt difficult. However, this course explained the structure of Node.js so clearly that I could understand it from start to finish. Above all, the difficult concepts were explained with easy and appropriate examples, which made it very easy to understand. While taking the course, I thought, "Studying can actually be this fun," and it’s been a long time since I’ve felt this excited to take other courses as well. Frankly, it's hard to believe that a course of this quality is provided at this price. I plan to purchase and take all of your other courses as well. Please continue to make many great courses in the future. Thank you.