First thing you need to do is go to your WordPress admin area and click on Plugins » Add New. Then search any plugin and click on install button. But from here you can only install free plugins that are available in WordPress plugin directory. Click on image left from more info.
admin https://cooltimeline.com/wp-content/uploads/2019/03/cooltimeline-logo.png admin2016-09-16 06:26:342016-09-16 06:26:34Install via direct WordPress plugin search