1. Use Etcher to install the image on a 16GB Micro Sd card.
2. Put the card in the PI, connect a monitor, keyboard and mouse (I use a Logitech K400 wireless kb/trackpad combo) and plug in the power.
3. Once you see the Pixel desktop you can click on the icon for the wifi settings in the upper right corner of the desktop (next to the Bluetooth icon) and select your router's SSID and login.
4. Identify your Pi's IP by hovering over the WiFi indicator.
5. Shut down the Pi and plug the CM19 into the Pi and power it up.
6. Use any browser to go to the Pi's IP and you should be looking at HA-Bridge. You're done!
Now go to T's page at
http://forums.tuicemen.net/index.php?topic=1310.0 and you'll find the instructions for editing HA-Bridge. I have a few things already set up so just edit them.
Easy as Pi!