1. Creating and Editing Content in WordPress
Widgets!

2. What’s a Widget?
Widgets are tools and/or content that you can add, arrange, and remove from the sidebar(s) of your site.
Widgets make it easy to customize the content of your sidebar(s).

3. Using Widgets
Widgets are accessed from your Dashboard at Appearance>Widgets.
The available widgets and widget areas are determined by your Theme.
To use a widget:
Drag an available widget from the Available Widget area to the desired Sidebar area.
Make any modifications/edits.
Click Save.