1.Touch and hold the settings key 
on the keyboard or touch the keyboard settings icon 
from the system bar to bring up the input method selection dialog box.
2.Touch the desired language from the list. The selected language is displayed on the space key.
Dictionary
Your tablet has dictionaries in many languages that can be helpful when composing messages and documents. The appropriate dictionary is activated automatically when you touch a supported keyboard.
The active dictionary suggests corrections or completes the word while you type. You do not need to interrupt your typing to accept the suggested word.
•Accepting or rejecting dictionary suggestions
To accept a dictionary suggestion, touch the correct word when the dictionary suggestion is displayed. To reject a dictionary suggestion, finish typing the word that you want, and then touch the space key.
•Correcting a word using the dictionary suggested corrections
If you misspell a word, the word is underlined with a red line. Touch the misspelled word and a list of suggested corrections is displayed. Touch the one that best matches your word. The misspelled word is replaced.
You also can create your own dictionary by using the Personal dictionary function.
To add a word to your dictionary, Open Android Settings and touch Language & input ➙ Personal dictionary ➙ Add.
Disabling the onscreen keyboard
If you prefer to use a physical keyboard, just connect an external USB keyboard or a wireless Bluetooth keyboard to your tablet. The onscreen keyboard is disabled automatically.
Using the ThinkPad Tablet Pen
The
Some tablets are equipped with a ThinkPad Tablet Pen as a standard feature. For tablets that are shipped without the ThinkPad Tablet Pen, you can order a pen from Lenovo at http://www.lenovo.com/accessories/services/index.html.