The good news is you have this app. Go thru the comics alphabetically and literally add anything and everything that looks interesting to you and put them in a list. To be honest I could tell you stuff I like all day but at the end of the day nobody can tell you what you like. But if you’re paying monthly and want to unsubscribe eventually, by then you’ll have dipped you fingers into everything and know what you like. Then you can invest here and there into the ones you deem most important. The New 52 is a good place to start, but not necessarily a must. The next series titled Rebirth alters time in a way that it also is a fresh start. This app has only one issue of the rebirth titles, but one is usually enough to gage if you wanna keep going. Better than amazons 2 page preview
New 52 Batman run, The Long Halloween, The Killing Joke, Knightfall, all good series.