To Apply a Style, (Desktop Version) place your curser in a paragraph and from the Home tab, find the Styles button and select your desired style.
To Display the Styles Pane (Desktop Version) Click the small arrow in a box on the bottom right-hand side of the Style’s button in the Home tab.
To Create a Style, (Desktop Version) Select a sample of text that is formatted the way you want your style to appear, then hit the Style gallery’s More button and select Create a Style. Alternatively, click the New Style button in the Style pane. When you are happy with your style, name it and click OK.
To Modify a Style, (Desktop Version) Change the formatting for some text with a style applied, then right-click the style in the Styles gallery or the Styles Pane and select Update to Match Selection.
To Apply a Theme (Desktop Version) from the Design tab, click the Themes button and select a theme.
To Use a Document Template, from the File tab, click New select a Template by choosing one from the recommended templates or searching for a template in the search field, then click Create.
To Create a Document Template, from the File tab, click Save As. Then, select a location for your file to be saved and name your file. Next, click the arrow by “Save As Type,” from the list, choose Word Template and click Save.