The Clear Formats Button
Did you ever inherit a badly formatted document just wish you could start over? Use Ctrl+A to select all the text and on the Home tab, in the Font group, click the Clear Format button. Now, put in your own formatting!
Editing the Header (and Footer)
Many people have trouble finding this feature in the newer versions of Word. In the Print Layout view (usually the default view), scroll so you can see the top of the page. Now, double click where you would normally see the header at the top. You should now be in Edit mode with the Header & Footer Tools contextual tab at the top.
Whether you want to create an attractive and organized look for your document or you are planning to create a Table of Contents, you’ll need to use heading styles. On the Home tab, in the Styles group, you’ll find the Styles gallery where you can just simply click on Heading 1 or Heading 2, etc. You can also try Ctr+Alt+1 for Heading 1 and Ctrl+Alt+2 for Heading 2.
Do you have paragraphs that you use over and over like company profile, executive bios, legal disclaimers? Try saving your own custom Quick Parts that you can access anytime you want to. Find a document where the text now exists and open it. Select the text you wish to make a Quick Part from and on the Insert tab in the Text group, drop down the Quick Parts button. Select Save Selection to Quick Part Gallery… Name it and add a description. Anytime you need it now, you’ll find on the Quick Part drop down list.