From the home screen, tap the Apps menu in the bottom left corner.
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Tap the Settings icon in the bottom left corner, and then select the Settings app.
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Select Language & input.
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From here, you can change the language of the built-in, Android keyboard, or the language and layout of any physical (USB or wireless) keyboard you have connected to the device. 

Android Keyboard

Tap Android Keyboard (AOSP).
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Tap Input languages.
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Disable Use system language and select your desired language from the list of Active input methods.
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Use the Back button to return to the Language & input menu and tap Current Keyboard. Tap the language you wish to use.
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Physical Keyboard

Tap the name of your keyboard in the Physical keyboard section. Tap Set up keyboard layouts.
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Select your desired language from the list.
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