I need to open a .epub file to read an ebook proof. Which adobe product would help me do that?
Digital Editions is the Adobe product for eBooks on your computer. For mobile devices you should have a eBook reader or you will have to download an app for your device.
Go to this link and download their Digital Reader. There are other ways to read .epub files. Mozilla has an add on if you use Firefox and you can download a free android app for your phone to do the same thing.