First you would need to download the plugin from the source (which will be a zip file), then go to your WordPress admin panel. Click on Plugin » Add New. Then click on the Upload Tab.
You will see a screen like the one above. Browse the file and upload it (zip files only). You will be taken to the activate a plugin page just like this one:
Make sure that you click on Activate the plugin, now you have installed the WordPress plugin. You would have to configure the settings to fit your needs. These settings will vary for each plugin therefore we will not be covering that in this post.
Install a Plugin using FTP Manager
If you are very new to web and have no idea what an FTP Manager is, then this option is not for you. The FTP manager method is the least friendly for beginners out of the three method that we shared in this post. You would need to access your host through the FTP manager. Access the path (/wp-content/plugins/) And upload files there.
The above screenshot is of a FTP software known as Ipswitch WSFTP Pro. You can simply drag and drop plugin files. You must make sure that you upload the unzipped folder. Once you have uploaded, then you would need to click on the Plugins tag in your WordPress admin panel.
You will see the plugin you just uploaded. Click on the Activate button and you are done.