Well, the language settings of any Android tablet is pretty similar on all Android interfaces be it Ginger bread, Ice cream sandwich or Jelly Bean v4.2. These simple steps should be helpful:
1. Go to Settings through your Home screen menu
2. Choose ‘Language & input‘
3. Press the top most option of ‘Language‘ which is predefined to English (United States)
4. A menu will display a list of languages to choose from. Select preferred option and changes will take place immediately.