You can mark any folder or item as a favorite. You can favorite an item in the item list (detailed view only—this feature does not appear in the simple view) or on the details page. You can favorite a folder only in the detailed view of the item list.
All new folders and items display a star outline to the left of the action: 
. A solid star indicates the content has been marked
        as a favorite: 
.
Though you can browse the library to find an item to mark as a favorite, it's more likely that you'll simply choose to favorite content as you come across or work with it. In this case the first two steps will not apply.
- Ensure the item list is displayed in the detailed view.
 - Browse the library to locate the folder or item you want to mark as a favorite.
 - 
        Click the star outline or the Favorite action of the folder or
          item you want to mark as a favorite.
        Note: If you are marking a content item, consider previewing it first to ensure it is the correct one. You can favorite the item on the details page.
 - 
        Click the My Favorites view in the browsing pane to display a
          list of all folders and content items that you have designated as favorites.
        Tip: Simply click the solid star to revoke its status as a favorite.