FWIW, my walk-through of adding a satellite (Raspberry Pi Zero with reSpeaker 2-mic HAT) to Rhasspy & Home Assistant came to 34 pages 
… and I still have aspects of my setup I’m having trouble with (which suggests I need to learn more to be able to explain it better to others).
I’m thinking it would be better to summarize than to provide such a long detailed tutorial … especially given that there are several points (like using a SSH client) where there are lots of alternatives that I don’t want to give such detailed instructions for each.