Thank you for leaving such a great review. When I was learning this part in the past, I was tired because I wondered why there were so many detailed functions, but I had to learn them, so I organized them one by one. This is the part where I made the lectures in the way I learned them in order to become a full-stack. If you can't remember the detailed functions, go to the Google Drive folder I provided and search at the top. Then, since you have taken the lecture, you will be able to see the materials with related keywords right away. Then, you can implement them much faster. I will film this part on YouTube later and share it separately. Thank you.