I was preparing for the Big Data Analysis Engineer practical exam and felt lost because I didn't know anything. Then I was recommended "퇴근후딴짓"'s practical course and decided to take it. I started preparing for the exam having only self-studied Python basics, but the instructor kindly teaches step-by-step, making it easy to understand and enjoyable to study! Although I haven't taken the exam yet, I feel confident I can pass just by following this course and studying 😊😊 It's a satisfying course that's well worth the money.