In 2023, the instructor's course was opened at my company, so I applied, received the textbook, and watched the videos once. I took the exam this time. Rather than studying mainly with summary books, I think properly watching separately offered courses would help build concepts and prevent being shaken even when facing difficult questions. I took the exam today and I'm not sure about the pass/fail result, but I think I was able to get the recall questions right because I remembered "pretty," "actual," and "sensitive" 😊