The class content is really good, but it seems really really basic ㅠㅠ I recommend only those who are completely new to SQL to listen to it. There are videos with duplicate content (only the content is duplicated, the videos themselves are different) and it's a bit frustrating because familiar content keeps coming up.... And the speech is too slow... It's slow even at 2x speed, so I wish there was a 4x speed... Still, it seems really good for people who don't know anything about how to use Google or how to search.