Thank you for these replies. I still had some stuff to learn to even understand what they meant. But, after about 30 minutes last night, I was watching the NHL playoffs.
Here is what I learned to get from 0-60 (or at least 25). Maybe this will help someone else who is coming into this really green like I was. I followed this guide:
https://www.youtube.com/watch?v=JGnVuo4qcEA . Only issue was that kodi has changed how its website looks, so I had to hunt around a little bit to do some of the same things.
First, you need change the settings on the fire stick so that it will allow you to access the internet without going through Amazon.
Second, you need to dl an app that, as far as I can tell, functions as a browser but isn't silk.
Third, in this browser app, you navigate to the kodi site and download the android version. But kodi doesn't really "have anything." It is essentially a media center. You need to fill it up with stuff, which for me was streams of live sports.
So, fourth, inside of the kodi app, you dl a "wizard" that will populate kodi with stuff. It also changes the appearance of kodi a little. I used the fusion.tv one, which isn't called fusion, it's called indigo. But you get it from the fusion site. I have no idea why. It's also called an "add-on," and I don't know why that is either.
Then you restart kodi - it now looks like it has indigo skin, although it's called tvaddons.ag for some reason. Under videos>addons there are a couple of sports ones. Inside those are lists of streams to watch.
There's plenty I still don't get, but I was able to get to where I wanted to - live NHL playoffs last night.