You can create new widgets to add functionality to your site. A popular widget many people create and edit is the the Custom text/html widget. To add a new widget:
- Go to Admin Bar > Appearance > Layout
- Click on the Add new Widget tab (on top right of widget banner)
- Choose the new widget you want to add to your site
- Give the widget a name (for your site layout), and you can also give it a name that will appear to the public on the page
- Enter the appropriate information for the widget
- Click the Save button
- Drag and drop that widget from the other group of widgets into your site layout