All documents should have a title that represents the content of the document.
Open your Word document and select File from the Main Tabs.
In the Info screen, type your descriptive title into the text field marked Title.
Word Web App does not have full functionality. Following the steps below will ask you to open the Desktop App
Open your Word Document in your Web App and select File from the Main tab
Select Info and then select Open in Desktop App
Click on Open Word and your document should open up with the Desktop App. At this point you may go back up to the top of this page and follow the steps to add a title to the document using the Desktop App.