Prior to setting this up I had never touched a Pi or linux. Trust me, if I could do it so can you. That said, I think the ever prolific Mr. T is considering creating an Alexa only version of the Pi hub image if there's some interest.
Even if he doesn't, the script he created is still on his website and can be added manually.
http://forums.tuicemen.net/index.php?topic=1310.0 You'll need a Pi Zero W, power supply (a 5v 2.1a cellphone charger will do), a 4GB or larger Micro SD card and an OTG adapter (it's just an adapter to convert the CM19's USB connector to micro USB). The only other thing you'll need is a card reader so you can set things up on the Micro SD card.
To install Raspbian Stretch w/Desktop I highly recommend this page:
https://learn.sparkfun.com/tutorials/getting-started-with-the-raspberry-pi-zero-wireless/allThere's a lot of good info worth reading but you'll want to scroll down to Install the OS Option 2.
Follow the instructions to d/l the .zip file to your PC - you don't have to unzip it.
Install Etcher from the link shown and run it.
Plug the Micro Sd card (reader) into your PC.
Select the zip file, select the drive, select Flash.
Get a cup of coffee and wait.
When it's done put the Micro Sd card in the Pi and power up.
Follow the rest of the instructions to set things up and then you'll be able to enter the script. You should be able to browse to and copy the script and then paste it into the terminal command line. It's not difficult and we can walk you through it.