NordVPN Installation

Newbie needs help. I currently have LEDE 17.01 4. It's a fresh install and has no Internet either ethernet or wireless. I'm trying to install NordVPN (us1851.nordvpn.com.tcp.ovpn). Looking for step by step instructions on how to install this file within the router running LEDE. Any help would greatly be appreciated.

fwiw, this old thread might be useful:
https://forum.openwrt.org/t/open-vpn-and-nordvpn/12303

See OpenVPN Client

If you use the search function of the forum, you will find more discussions around NordVPN.