The screen should open in Normal view. If not, select View, Normal, from the Word menu bar at the top of your screen. You will put the text of your paper to the right of the line, in place of the sample text. Also note that these Style names show up in the pull-down menu for Styles at the top of your screen in the Formatting toolbar, near the font name and size. Find the toolbar by hitting View, Toolbars, Formatting.
Templates start with a page of information about the authors.
The boxes that you fill in won't be published, but will be used for indexing and search purposes. After this first page, the material you put in the template will go into the publication. You must also have a Conclusion. The Styles listed between the Introduction and the Conclusion are just to demonstrate how and what you might use. These are not required and can be in any order.