Your iPhone or iPad shows you all the books which you've put on the "My eBooks" shelf, with those read most recently listed first. Any Google eBooks you buy will automatically be added to this shelf and be available in the Google Books app on your iPhone, iPad, and any other device or reader you use to read Google eBooks. New books may take a couple of minutes to appear, but closing the app and re-opening it will show new books immediately.
Buying books. To buy more eBooks, tap the "Get eBooks" button or visit books.google.com on your computer.
Removing and adding books. To remove a book from this shelf, visit books.google.com. You can also add back any books you've removed, as any eBooks you've bought will always remain on your "Purchased" bookshelf.
To read a book, tap it. It'll begin downloading if it hasn't already. The book cover will remain dimmed until the download has finished, although you can still start reading. If you're offline and the book hasn't completed downloading, a warning message will pop up to let you know.
Book controls. Tap the center of the screen to bring up or dismiss the menu bar and slider. The "My eBooks" button in the menu will return you to your list of eBooks.
Dragging the marker on the slider allows you to "flip" to another page.
Searching. If you're looking for a specific word or phrase, tap the magnifying glass icon () in the menu to search the book.
To change the way your book appears on your iPhone or iPad, select the Settings icon () from the menu.
Brightness. Select one of two brightness modes:
Text display. Some books offer a choice between "Flowing Text" mode and "Scanned pages." Note that the first time you switch between these modes for a book, you'll trigger a download of the other format
3-D page turns. You can also turn off 3-D page turns if you prefer to see pages slide instead of turn.