Any file in Google Docs can now be available to you "offline." This means that whether you're online or not, files are accessible to you.
Google Docs automatically updates the files when you are connected to the WEB. You can also manually update them by clicking on "update" in the Offline Section of the app.
Android tablet users have an added feature. When viewing a Doc on the Android, you will see a high resolution version of the document.
To change pages, swipe left or right. You can also use the slider at the bottom to navigate through pages quickly.