Is this the perfect standalone tablet for HA?

I am not new to Ubuntu- I have three servers at home running Ubuntu. Can someone PLEASE provide step-by-step flash instructions without the spaghetti bowl of instructions in the first post and subsequent github pages?

Sphagetti bowl means:
Do this …
or do this …
then if you are using a MAC do this …
Windows …
unless …
the instructions are for Ubuntu …
install more from github …
which says to install something else from github …
Or not …

PLEASE.
On the PC:
1.
2.
3.

or on Ubuntu:
1.
2.
3.