I'm watching the [short course ](https://www.youtube.com/watch?v=fRNcP9xjk-8&list=PLUkh9m2BorqnKWu0g5ZUps_CbQ-JGtbI9&index=10)and honestly, it is difficult for me to understand since I don't have finance background (i'm a tech exec). I want to get advice from the knowledgeable folks here on which of the 3 courses is good for me if I want to learn valuation to value the stocks
option 1. rewatch the [short course](https://www.youtube.com/watch?v=fRNcP9xjk-8&list=PLUkh9m2BorqnKWu0g5ZUps_CbQ-JGtbI9&index=10) because long courses don't have much new information
option 2. take the [undergrad long course](https://www.youtube.com/playlist?list=PLUkh9m2BorqkYrFjNdut81IIcYdLfgqNd) because he starts from basic
option 3. take the [MBA long course](https://www.youtube.com/watch?v=V6-suY_Ur4w&list=PLUkh9m2BorqkgpNyRpP-NL3BS4yvFabXk) because relevant topics required to value a stock are covered here