I can understand JPA after listening to it twice and saying "Aha!", but Spring feels like a new language even after listening to the introductory + basic + current lectures. ㅋㅋㅋㅜㅜㅜ Among the things that the English-Korean instructor says, if I don't understand something, I'm the scholar type who studies it again until I understand it, but I'll study like a wild type who pushes forward even if I don't understand it once. ㅎvㅎ