To install Nelio Content, go to the WordPress Dashboard and click on Plugins » Add New and enter the keyword Nelio in the search box. The list of all Nelio’s plugins will be shown.

Select the Nelio Content plugin and click on Install Now. Once installed, click on Activate.
If this is the first time you have installed and activated the plugin, click on the Nelio Content icon and you’ll see an initial plugin setup page:

You must only explicitly accept Nelio Content’s terms and conditions of service and our Privacy Policy. Then click on Continue to access your editorial calendar.
Now you can start using the free version of Nelio Content but remember that if you buy Nelio Content Premium you will be able to enjoy all the features available. You may also want to check how to change to and activate the Nelio Content Premium plan.