So far what I've done is I read the conclusion of the New 52 Superman titles as well as the runs of New 52 Batman. Then I read DC rebirth stand-alone issue and have pretty much just followed the main Bats, Supes, Flash, Green Lantern. Justice League and Titans/Teen Titans books since.
I think I'd like to also get into red hood and the outlaws, I'm mildly intrigued from what I hear of it.
Starting at the end of new 52 is a good idea, is it true that the watchmen is somehow involved and the blue dr Manhatten is made to be responsible for the new 52 and stuff? When rebirth first started with the comedian's pin, all these rumors like that were circulating but I never did find out what the heck happened and wouldn't mind a cliffnotes summary.