Installing jQuery Lightbox For Native Galleries
For the image galleries to show a good-looking “slide show” we need to add a plugin. I recommend jQuery Lightbox For Native Galleries.
In the WordPress Dashboard open “Plugins” in left subpanel. Click “Add New”.
Enter “jquery lightbox for native galleries” in the search box. Click “Search Plugins”
Click “Install Now”
Wait and watch while the plugin installs. Then click “Activate”
Configuring jQuery Lightbox For Native Galleries
Go to Settings->JQuery Lightbox – in the Setting subpanel on the left sidebar of the WordPress Dashboard.
Choose which theme you like. The click “Save Changes”