Maybe this works as review for people who already know it, but it seems like it might be overwhelming for beginners. Learning to recognize 2-5-1 when you hear it in a song might be a better way to start?
Despite taking piano lessons as a kid, I was in college before I learned to recognize 12-bar blues whenever I heard it. That's pretty late, but you're part of the lucky 10,000 whatever day you learn.