To add a new widget/plugin on your WordPress website, login to your WordPress dash board and proceed as follows:

• From the left hand side pane select Plugins.
• Click on Add New.
• Now, the Add Plugins window opens up, browse and select a plugin from the list.
• Use the Plugin Search Bar to narrow down your search, by typing the function for which you want a plugin.
• Click on the plugin name to see the plugin description.
• Select Install Now.
• Click on Activate Plugin.
• The plugin will now appear as a widget in the Widgets section of your WordPress.