It's not only easy, it's fun too
Creating and Using Macros in Microsoft Word
If you work a lot with Microsoft Word and find yourself doing the same things over and over again, create a macro. Macro is an abbreviation of the word macro instruction, which means a series of instructions to perform a task.
The beauty of creating macros in Word is that you don't have to know how to program. If you can hit record and quit, you can do it.
Have you heard that macros are bad because they can contain viruses? While you should be careful about opening Office documents from unknown people because they can contain malicious macros, that is not a problem here. You are creating your own macro, so you know it is not a virus.