I borrow books from the library and download them to my tablet. after they expire, there is no way to remove them. when I touch the front of the eBook and hold it, the only options that are available are: Book Info; Buy Book; Share Book Details; or Refresh Book Cover. There is NO "Delete Book" option anywhere. Help?!?
Each platform has the ability to delete books, but the layouts are slightly different on each platform.
On Android, press and hold the book cover to get the pop up menu and select remove from library.
On windows machines, you can mouse over the book and select the info banner. This will open the book details. In the upper right corner of that screen, you will see a trash can. That will delete the book.
On iOS select the edit button (upper right) to reveal the X icons. Hitting the X will delete the book. Press done to exit editing mode.