There are so many choices that just browsing through the App Store can feel like getting lost in a shopping mall. Once you find an app that you want, you can install it by following these steps:
Browse through the App Store until you find an app that you want.
Tap the Price button that appears to the right of the app name. Common prices are FREE or $4.99. The Price button changes into a green INSTALL APP (for free apps) or BUY APP button (for commercial apps) as shown in Figure 12-4.
Tap BUY APP or INSTALL APP. An iTunes Password dialog appears, asking you to type in your password.
Type your password and tap OK. The app icon appears on the Home screen with the message "Loading." When the app's name appears, you can tap its icon to run that app.