It's much better than a 3-month boot camp that costs millions of won, and it gives you a solid foundation. And I learned all the concepts I didn't understand about Redux here. \(❁´◡`❁)/ There's nothing I regret, but if I really had to pick~~ 1. CSS, not styled-components 2. Redux updates and recommendations (It really doesn't matter.. I looked up the official documentation and they said there's no problem! The code works great.. It's just annoying..?!) 3. [For absolute beginners] This is not a lecture that teaches everything → You have to create the remaining functions yourself (there are quite a lot) → You can't refer to the answer sheet on GitHub (especially for beginners! Writing classes/Hooks/codes that are 180 degrees different from the lecture content) I created all the functions in my own way (functional version & not using the recommended library, but using the library I originally used & mobile responsive & personal portfolio).. I recommend absolute beginners who ask a lot of questions, power Google, or are passionate and head straight into the ground..! ✨However, in this case, please look at other lectures. (For React beginners)✨ 1. I was going to follow along from the beginning?! 2. I have to analyze the answer sheet to understand it?!