Hi, can I use InDesign to merge ePub files into one document? If so, is there a place I can find a tutorial how to do this, please? Many thanks
FXL ePub or Reflowable ePub?
(Whichever kind you want you have to create them for that particular purpose from an InDesign document.)
Calibre can merge epub files using the EpubMerge plugin.
You will need Calibre as well, of course:
It is also possible to use Sigil, but the process is much more long-winded and involves unzipping epub files. Calibre is the simplest method.
PS this is impossible in InDesign.