Highly recommend these issues of Green Lantern:
Recommend picking up Justice League America, great story, art work and if your a Batman and Killer Frost you'll love it.
If your a big Batman fan then you'll definitely wanna pick up issue 24
If your a big Nightwing fan like I am then I would highly recommend picking up these comics if they can make the movie like the comics then it's gonna be great. Also I recommend picking up issue 12 of Titans.
Highly recommend these two issues if Justice League America, not only great art but a really two part story with a twist.
Highly recommend these two Justice League issues
the Dark Nights: Metal one-shots
Highly recommend these issues of Aquaman notice the new look Aquaman in issue 25 he looks more like the movie version of him.
Highly recommend Supergirl guest starring Batgirl who get trapped in the phantom zone, also recommend Supergirl book 4 which has been a On going retelling of her origin. Also I recommend Teen Titans featuring the repercussions of the battle with Deathstroke.
Highly recommend these set of Aquaman comics with the battle for Atlantis and great way to get into character with the movie coming out in 2018.