There's an effort to write a free, open-source, on-line book for the benefit of
IPv6 practitioners.
Who's going to write it? IPv6 practitioners. You.
https://github.com/becarpenter/book6 now has a (very small) amount of general
text, but we're waiting for more collaborators and more text from the community.
As the README says, "The intention is a practical introduction to IPv6 for technical
people, kept up to date by active practitioners."
There's a little preliminary content in sections 1 and 8, but still 6 empty
chapters...
Discussions and issues can be raised on GitHub but PRs with new text would be
even better.
Send me your github ID if interested.
Regards
Brian