Special characters are symbols or other characters that are not usually on your keyboard (i.e., copyright, trademark, pilcrow, section).
Follow the steps below to insert special characters or symbols:
 Place your cursor where you would like the symbol to appear in your document.
 Click the Insert tab on your Ribbon.
 In the Symbols group, click the Symbols button.

 Select the symbol you would like from the dropdown menu, or click on More Symbols.
Inserting Equations
Yes, you can insert mathematical equations into your documents using Word 2016!
Follow the steps below to learn how:
Place your cursor where you would like you equation to be placed.
Select the Insert tab of your Ribbon.
 Click the Equation button, located above Symbol (see graphic above).
 Select the equation you would like from the dropdown menu.
 If you do not see the equation you would like, select Insert New Equation.
 You will then see this Toolbar in your Ribbon:
 Select your equation.
 To edit an equation, click Design on your Ribbon while the dialog box is open.
Adding Footnotes
 If you need to add footnotes to your document, you can do so by going to the References tab on your Ribbon.
 In the Footnotes group, you can insert a footnote, and view and edit footnotes. You can also add Endnotes.
BONUS: Everyone knows that I love saving time and keystrokes! A quicker, easier way to insert a footnote is to simultaneously click CTRL  ALT F.
You can then start keying in your footnote text. To exit the Footnote area, simply click back in your document!