Hello! I am a 3rd year backend developer! (I tried to follow the instructor's opening comment^^) I have never written a product review or a course review, but I remember feeling a sense of accomplishment and strength when I prepared a seminar at my company and heard from my juniors that it was helpful and that they were grateful after the presentation, so I am writing this in the hope that my writing will be of some help to the instructor^^. I have experience studying for 4 to 5 hours to explain to my juniors for 10 minutes... I can't even imagine how much effort the instructor must have put into preparing this quality and quantity of lectures. The instructor's lectures were the best, the best, and I am sure they will continue to be the best^^. I will always cheer you on!! Thank you!!