Suppose, you have installed the WordPress. If you do not know how to install the WordPress, contact your hosting provider or see the document

• Log in to the WordPress Dashboard
• Navigate to the Plugins → Add New → Upload Plugin;
• Click on Choose File and select the zipped file named testimonial-pro;
• Click on Install Now; When done, click on Activate the plugin.
•  After activating the Testimonial Pro plugin, you are ready to add testimonial slider, grid, filter, and list layout in your post, page, widget or anywhere you like.