There really does seem to be a lack of good documentation about all of this. The docs that I've seen appear to be aimed at actual network engineers, or are so incomplete as to not be worthwhile.
I would be much less stressed by all of this if I could find something good that sits between those two extremes.
A part of me, though, suspects that the reason there is no "middle ground" documentation is that it's not possible -- that IPv6 is too complex for that. Not saying that's the actual reality, but it has the whiff of it.