One of the tasks that can be automated in Word is the production of standard letters to a number of recipients, a technique known as 'merge printing' because the letter is merged with data from a data source - an alternative term is 'mail merge', which is what it is called in the Options menu of Word..
The recommended route for performing mail merges is to create a database in MS Access and use the data fields you provide there in your form letter. The first task to perform in creating a Mail Merge, therefore, is to create the database that will be merged into the standard letter. Switch to Access and create the following table:
The only issues here are the choice of fields for the primary key and the size of the text fields. For small lists of people the Last Name or Last Name-First Name combination will probably be adequate but for longer lists some other combination may be required such as Last Name-First Name-Date of Birth. Regarding field length, 20 characters should be enough for most names while Initials and Title and 20 characters should be enough for each line of the address. Date of Birth is included here in short date format so that you could search for birthdays and send greetings in a standard letter.
Save the new table and add the data to the new database:
For details of using MS Access see the notes in the relevant section.
Make sure you close the Access database before proceeding to the next stages involving Word.