A common misunderstanding is trying to place a browser incompatible file on a webpage like Microsoft Word.
Websites and browsers cannot read Microsoft Word or other Microsoft files like Excel or Power Point (files with .doc .docx .xls .ppt extensions)
Note: Although you can download these files from a website you cannot make them appear on your webpage like an image or be read by your browser like a PDF file.
Instead of MS Word files, you need to place image files on the webpage. The most common being JPEG and PNG files. Image files are files with the .jpg .jpeg .png .gif .bmp extensions.
So if you've created a "Coupon" or "Special" in MS Word how do you use that for your website?
OPTION 1:
Make it a downloadable file like a PDF.
Upload it to your "FILES"
Create a link (i.e. Download Here) so customers can download the file
OPTION 2:
Convert it to a image file so you can place it within the webpage
The easiest way to do that is to take a "screen capture" of your document. Just capture a portion of your document to convert it into an image.
On a Mac:
Command ⌘ + Shift + 4
On a PC:
Windows logo key 
+PrtScn
(more info on screen captures on PCs)
Then upload it to your webpage...