I thought it would only teach me how to use Obsidian, but it's a lecture that teaches how to properly build a personal knowledge management system. Being able to get an enormous amount of data, over 30MB, all at once, felt like the instructor's brain was directly transferred. I know proven methodologies like ACE Framework and 6F Journaling are good, but the reason they were difficult was that initial setup took too much time. But it was great to be able to skip that process. I've known about Obsidian for a while, but because I couldn't get into the habit, I always went back to Notion, which was always a shame. After taking this lecture, I plan to properly settle down with Obsidian. I highly recommend it to those who, like me, go back and forth between Notion and Obsidian!