DC Comics and Comixology are currently putting on an incredible 3-day digital comics sale on DC’s Infinite Crisis Event, which includes the Infinite Crisis mini series as well as the aftermath comics: 52, World War III #1-4, and The Four Horseman #1-6.

By this point, most comic book readers that enjoy the DC Universe have read both Infinite Crisis and 52. But in case there are some reading this that haven’t read these comics — whether they’re new to comics or simply not a DC fan — please let me give you a rundown of these two series. If you don’t want to read about the comics, just go here and buy them; for everybody else, here we go…