As you have been typing text in a new document or editing existing text, you have had to notice QuickSpots. All of the items found under the Edit Paragraph can be accomplished other ways, but the paragraph QuickSpot serves as a visual reminder that formatting can be done to the paragraph. You can also create an effect in one paragraph and save that as a paragraph style to apply to other paragraphs.
Styles are a way to quickly apply formatting throughout a document.
There will be an exercise later to illustrate this feature. Make sure you have at least three paragraphs and that the paragraphs are not indented with a tab. Click on the QuickSpot for the first paragraph and change the font to another style. Change the justification to center, and add a single line border around the paragraph. Move to another paragraph and change the indentation to Double Indent and look at the effect.