Request a WordPress site.
Choose a theme at Dashboard>Appearance>Themes.
Customize the theme with the prepackaged banners or create a banner of your own.
Choose what you want to appear in the side bar at Dashboard>Appearance>Widgets.
Review the installed plugins at Dashboard>Plugins to see if they can enhance your site.
Additional plug-ins can be reviewed at https://wordpress.org/plugins/. Please check that your desired plugin is actively being developed.