Widgets

To add and style your content in sidebars and footer you can use widgets. Go to Appearance>Widgets.

There are default WordPress widgets that take the theme style though. More about WP widgets you can read here:  https://codex.wordpress.org/WordPress_Widgets

And there are also additional theme widgets. To add a widget to your sidebar/footer, just choose it and drag to the right side inside needed area. Then start configure settings filling in needed fields and selecting desired options.

NOTE: To add an additional field in the widgets that allow it (like Follow us widget), you need first save previous options for to activate Add new button

Let's take a look at Theme Widgets

Banner Banner with a background image, text, icon and button	Category list shows taxonomy objects with number
Contacts displays contact information with description and icon	Follow us adds links to your social accounts
Latest News shows the preset number of latest posts	Login adds login form
Menus allows to display custom  menus in two columns	Tags cloud shows the preset number of tags
Text with button adds a text block with title, short description and button