The download was easy and I had a copy of the font in ZIP format. The next task wasn't as easy, but, a quick Google search found me a link with instructions. I followed it and created a local directory in my profile and ran the command fc - cache -fv in a terminal window. I did it that way as I didn't want to mess around with system folders and if I screwed up it was fast and easy to remove it from my user account. With the instructions it was easy and when I shut down CoreBird and restarted I could see the emoji displayed properly.