Posts assigned to post categories are displayed on category pages on your site. You can add, edit and view categories as follows:
Step 1: Go to Posts > Categories and either create or edit an existing category. You can view the categories you have created by hovering your mouse over the category name and clicking the View link.
Step 2: To edit existing categories hover your mouse over the category name and click the Edit link. You can also edit a variety of options on this page including page header background, page layout etc.