Node installed, but can't get version or run Node

Hi all! So pretty new to DigitalOcean, and am wanting to get the MEAN stack tools installed on my droplet.

I got npm installed easily and can get npm -v However node -v and node didn’t work.

So I followed the instructions here: https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-an-ubuntu-14-04-server

Followed these steps:

    sudo apt-get update
    sudo apt-get install nodejs

And got the follow:

root@Bitage:~# sudo apt-get install nodejs

Reading package lists... Done
Building dependency tree
Reading state information... Done
nodejs is already the newest version.
nodejs set to manually installed.
The following packages were automatically installed and are no longer required:
  linux-headers-3.13.0-36 linux-headers-3.13.0-36-generic
  linux-image-3.13.0-36-generic linux-image-extra-3.13.0-36-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 70 not upgraded.

root@Bitage:~# sudo apt-get install npm

Reading package lists... Done
Building dependency tree
Reading state information... Done
npm is already the newest version.
The following packages were automatically installed and are no longer required:
  linux-headers-3.13.0-36 linux-headers-3.13.0-36-generic
  linux-image-3.13.0-36-generic linux-image-extra-3.13.0-36-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 70 not upgraded.

root@Bitage:~# node -v
root@Bitage:~# node
root@Bitage:~#

I’m still not getting the node version, and also typing node doesn’t open the REPL?

What am I doing wrong?