I don't consider myself a Batman fan. I have seen the movies (all of them). I have read enough issues to be generally familiar with the world and main characters. I love Batman Beyond on principle, yet I'm still not a Batman fan. Heck from memory this is only the second (main) Batman graphic novel I've ever read. The first being A Death in the Family which is why this to me this is holy crap epic and if I say anymore I would be spoiling it to you so I will shut my mouth. 
 I only became interested in this after watching the movie: 
 and honestly if you are not that familiar with the DC universe the movie does a better job presenting this story line and filling the gaps so to speak. The graphic novel had enough of elements of the DC world that I wasn't familiar with so I wasn't sure what they were talking about specially how (view spoiler)[Superman coming back to life is why other people came back to life? IDK (hide spoiler)]. 
 I also realized that I really enjoy watching the dynamic between Bruce and his adoptive sons. I need more.