iBook computers, labelled as such on the frame of the display of notebooks Apple made prior to 2006,
are not the same the iBook software that comes with Mac OS X 10.9, Mavericks.
For the notebook computer, the forum
is the ideal one to use, if it is specific to that Mac model.
is strictly for the eBook reader found on Mac OS X 10.9 Mavericks.
Lets you choose between Mavericks and iOS versions of the eBook reader, as well eBooks purchased from the iTunes Store.
The iOS version for iPad, iPod Touch, iPhone forum is here: