Plugin gives users or guest an option to like an article or a page.

Noted That:

To install correctly this kk-i-like-it.zip.
Fisrt Download the kk-i-like-it.zip to your computer
Extract/Open kk-i-like-it.zip to Your Computer.
Then, Find readme.txt file inside kk-i-like-it.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "kk-i-like-it.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "kk-i-like-it.zip" Downloaded plugin from your computer, Where you downloaded kk-i-like-it.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "KK I Like It" folder is added on left sidemenu. Now, Click on "KK I Like It" folder.

Noted that: If you do not see "KK I Like It" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about KK I Like It Configurtions and Settings or How to work "KK I Like It" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "KK I Like It" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is KK I Like It
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide
Unpack files from the patch you have purchased. Copy folder ‘kkprogress’ to a folder on your own server. To do it you might want to use programs meant for establishing connection with FTP server (personally, I would recommend FileZilla program. You can find guide on how to use it here). All the data needed for establishing connection with FTP server should go together with a purchased server. Next, log in to the administrative panel of your blog. Go to the tab called ‘Plugins’. Find plug-in called ‘KKILikeIt’ and click on ‘Activate’ On the left hand side, ‘KK I Like It’ tab should appear. From that tab, you can manage your plug-in.

Guide

Unpack files from the patch you have purchased.
Copy folder ‘kkprogress’ to a folder on your own server. To do it you might want to use programs meant for establishing connection with FTP server (personally, I would recommend FileZilla program. You can find guide on how to use it here). All the data needed for establishing connection with FTP server should go together with a purchased server.
Next, log in to the administrative panel of your blog.
Go to the tab called ‘Plugins’.
Find plug-in called ‘KKILikeIt’ and click on ‘Activate’
On the left hand side, ‘KK I Like It’ tab should appear. From that tab, you can manage your plug-in.

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Reffered: https://wordpress.org/