1- Click Tools> Macro> Record New Macro on the Menu bar.
Macros are advanced features that speed repetitive tasks you may perform in a Word document. They record sequences of menu selections that you choose so that a series of actions can be completed in one step.
Suppose I am typing a document in Word. I have to type the following repetetively:
The answer to the question is:
I can create a Macro that does this in only one step.
To record a macro, follow these steps:
1- Click Tools> Macro> Record New Macro on the Menu bar.
You will see the following dialog box:
2- Name the macro in the Macro Name field. I named mine "answer". The name cannot contain spaces and or begin with a number.
3- From the Store Macro In drop-down box, select the document you would like the macro to be associated with or choose "All Documents" to be able to use the macro in any document.
4- Enter a description of the macro in the Description field. This is for your reference so you remember what the macro does.
5- In the Assign Macro to: Press Keyboard. I assigned my macro to the keys Control + N. (See below: Press new shortcut key.)
6- Click Assign, then Close to begin recording.
When you click Close, the Recording Window will appear. 
7- Type: The answer to the question is:, then press the Stop Button.
Now insteaad of typing the sentence, just type Control +N, and the sentence will be typed automatically.
