I am editing a long Word document and would like to keep the table of contents in view so that I can stay oriented as I work on the main part of the document. Is there a way to do this, perhaps with a vertical split view with the table of contents on the left and the main text on right?
You can use the document map.
What it looks like
It will display the table of content on the left of your document:
How to display in Word 2003
To display the document map in Word 2003:
How to display in Word 2007+
In word 2007 or higher: