First of all, I'm a fledgling developer aiming for overseas employment!! I've only studied in Korean so far, so at first, I was unfamiliar with many words in English, but I actually liked it. Since it's a language I'll have to use if I get a job, I think I was able to think about it again in context. The instructor probably intentionally used a lot of English since it's a term that's often used in the field! Above all, the video lengths are all short, so I could keep taking the lectures without getting bored!!