Zatara the magician is supposed to be in Action Comics #1 but the DC Universe version only has Superman’s secrion of it. Is there a way I can read Zatara’s section?
All of the other sections of AC1 are missing because ComiXology was trying to sell what amounted to a chopped-up version of the Golden Age Superman collected editions. If you want to request DCU to add the rest of the issue, the best place to do that is in this thread:
You could maybe look on Ebay for the limited edition oversized Action Comics No.1 DC published in the 70’s as part of that range of reprints.
The price may be astronomical , however, due to price gouging.