Ummm what are the series that make up the Fourth World ‘universe’?
Mister Miracle, New Gods, Forever People, and Superman’s Pal Jimmy Olsen. There are black and white TPBs of Mister Miracle (two volumes), New Gods, and Forever People. There are color TPBs of Jimmy Olsen (two volumes). There’s also Jack Kirby’s Fourth World Omnibus (I think there are four volumes of that). The Omnibus volumes collect all of the series in the chronological order in which the issues were originally released.
I think there might’ve already been a thread about the Fourth World, but it’s probably buried deep. (That’s what she said.)