Here are the simple steps, many with video, to cut the cable cord with Kodi:

1. Use a commercial VPN, like Private Internet Access, to keep your ISP at bay. ($40 / year or less, for up to 5 devices, including routers, which count as 1 device no matter how many are connected)
2. Purchase the TP-LINK TL-WR841N Wireless N300 Home Router (~$20) to host VPN
3. Install DD-WRT on the TP-LINK TL-WR841N to configure VPN
4. Configure Private Internet Access VPN via PPTP on DD-WRT
5. Purchase the Amazon Fire TV Stick ($40)
6. Install Fire TV Stick, connect to a router with VPN installed, and disable "Collect App Usage Data"
   • From the Fire TV home screen, select Settings, Application, Collect App Usage Data (off) 
   • Note from the "If you aren't paying for it, you're the product" department:  To use Amazon Underground apps and in-app items you are required to enable the "Collect App Usage Data" setting on your device.  This allows you to download and use Amazon Underground apps, games and in-app items for free.
7. Install Firestarter and Kodi (without Firestarter, Amazon makes accessing Kodi on a Fire TV device really hard)
   Update: Use this link to install Firestarter: http://bit.ly/1NzPaKE
8. Use the Config Wizard for Kodi (aka Hub Wizard) from TVaddons.ag to configure the Fire TV platform