Registering a Google account allows you to download and purchase content in the Google Play Store, access email through the Gmail application, receive personalized Google Search results, and have your account automatically logged in for all other Google-based services on your device.
From the home screen, tap the Settings icon.
Tap Add account.
Tap Existing. Note: If you need a Google account, tap New and follow the on-screen prompts, or visit www.gmail.com.
Enter your email address and password, and then tap the Right arrow icon.
Tap OK. Note: If Join Google+ is displayed, tap 'Not now'. To set up Google+ later, tap 'Apps' > 'Google' > 'Google+'.
To finish Google sign in, tap the Next icon. Note: To set up Google+ later, tap Apps > Google+.