Originally Posted by Starson17
Select the file, right click, choose rename, add ".zip" to the end of the name - after ".epub". In Windows you may have to turn on the option that shows file extensions.
Once you have the file renamed as a zip, open it and you will see that file.
In windows, you have to have explorer set show extensions
or do it from the command prompt.
you can change mybook.epub to mybook.epub.zip