- Seeing the knowledge I only knew in theory being applied through practice seems to help it stick in my mind much better. - Now that I've learned how to analyze execution plans, I feel confident that I can optimize other query statements I encounter in the future. - The lecture materials organized in Notion are so good that I feel like the content stays in my head just by typing along with them. - Each lecture is under 5 minutes, so I can listen to them without any pressure during my spare time. - I've taken several courses on Inflearn, but this one explains things really easily and clearly.