During my work in NIC.br, I was part of the IPv6.br Project. The project goal was to disseminate the IPv6 usage in Brazil.
One important activity of the IPv6.br was to provide free courses, not only with theory but also with practical laboratories. During the period I worked there, we trained around 3000 people. The textbook of the course was published as book and it is also available as e-book, it is written in Portuguese, but, as it has Creative Commons license, it can be translated.
One of the goals of this course was to be easily reproducible, so it was created to run in a Linux virtual machine and used the CORE Network Emulator to create the network topologies needed for the exercises. I made a basic video explanation about the CORE.
Other activities of the IPv6 Project included seminars in universities, companies and tech events.