WordPress Plugins
Plugins (also called Add-ons, Components or Modules) are files you usually download separately from WordPress basic installation that add functionality. To install a plugin you generally just need to put the plugin file into your 'wp-content/plugins' directory. Once a plugin is installed, you may activate it or deactivate it from the Plugins menu in your WP administration.
If something goes wrong with a plugin and you can’t use WordPress, delete that plugin from the wp-content/plugins directory and it will be automatically deactivated.
To upload the Module file into the 'wp-content/plugins' directory of your site, please find this directory in your CPanel -> FileManager -> 'www' Folder.
Once you upload the Plugin into the 'wp-content/plugins' directory, you will be able to see it at the Plugins page. In order to activate the new module, you simply click on Activate.
Not all Plugins are easy to install so, please read this some tips below about the things you should consider before you install.
Before you install.
Read through the ReadMe files and web pages, as well as any comments regarding the Plugin on an author's website, before you install. The more you know before you install, the easier the process should be.
Plugins require downloading and uploading to install.
You must be familiar with how to download and upload files and how to use FTP, if required.
Plugins may require modifying WordPress files and templates.
Familiarity with PHP, HTML, CSS, and CHMOD may be necessary.
Record modifications.
If you make any changes to the WordPress files or templates, make a note of it in the code by using comments before and after the changes, and in a text file saved to your site and on your desktop to remind you of any additions or modifications to your default files or templates. This will help you repeat these in the future if there are any problems with your site.