Unfortunately, something within the latest release of 'buntu is not configured correctly to just install and go. After some Googlin' I found Jinyu Liu's post about setting up Ghost, and he found the magic.
Run the following:
sudo update-alternatives --install /usr/bin/node node /usr/bin/nodejs 10It will fix the Node symbolic link, which is apparently not correct.
After running that, everything installed just as described on the Ghost.org site, and I had a new blog up and running in minutes.