Plugins are a bit like Apps on your Smartphone. They allow you to enhance your site in various ways such as Akismet which is a spam blocking plugin or Shareaholic which is a plugin that lets you add social media icons to your website.

If you want to read reviews on a certain plugin before installing use this site: https://wordpress.org/ and just enter the plugin name in the search box.

Don't go overboard or rush into plugins though as too many can slow your site down.

Thank you Paul.You explained very well. It is more clear to me now.
Anwar.

Hi Anwar,

A plugin is a program that can be used in conjunction with your Wordpress website to enhance it in some way or another,

An example would be if you wanted people visiting your site to have the facility to be able to share your posts via social media (ie facebook, twitter) then you would add a social media plugin to your wordpress site. Once you had installed and activated the plugin you would then have all the social media icons appear on your website for your visitors to use.

I hope this make sense, if you need any further advice just give me a shout and I will try to help out.

Paul