I've found some ibooks help for iOS but none for MacOS. I would like to be able to search, skip around and read continuously. So far, I've found that pressing an item in the table of contents doesn't always take me to that item. Also, using arrows or VO plus arrows doesn't always yield expected results. Ibooks sometimes also freezes and makes my computer seem less responsive. Any tips for using ibooks or recommendations for another app? Thanks.