Question Discussion & Solution

"Ctrl + Home" is used to moves the cursor to the beginning of Document.

There are three Mail Merge Helper steps:
The main document controls the merge. It contains the fixed information that will be in every letter and the merged codes where the variable text will be.
The data source is a document or database that contains the information that will be different for each letter. Remember, the data source is usually the names and addresses. It can be stored in a table in Word, an Excel Spreadsheet or a table in Access.
The merged document is the result of a merge. These are the individual letters that result from the merge. The merge fields are replaced with the actual data from the Data Source file.

Alt + F9 is the shortcut key to display field codes.

None of above.
From Office Button we can access Save command in Word 2007.
From 2010 and higher versions from File we can access Save command.

By pressing the ALT key on your keyboard, We should see that it has brought up a highlighted letter beside each of the menu choices. Now press the corresponding letter to the menu we want, and it will open further, again showing a highlighted letter for each submenu item. Press that letter on our keyboard and it will take us to that item. If we want to go back one menu level just press the escape key.