WordPress as CMS is very good for simple blogging and small informative websites.
If the webmaster needs to leverage the use of WordPress and make a more complicated website he might need to use plugins .
WordPress has ahuge amount of plugins in its repository .
How to install wordpress plugin?
1. Go to dashborad and choose plugins > add plugins
2. then you can choose from alarge number of plugins and install what ever you want.
another way is to install wordpress plugins manually by downloading it from WordPress Repo and then upload it to the website .