The GitHub Training Team Materials are in the process of moving to a new materials-only repo. This migration will help us publish our open source courseware in a way that makes it even easier for anyone to reuse them and potentially contribute enhancements.
All links to existing training.github.com public-facing URLs, such as slide decks and outlines will continue to function as they do today. This repo will not be removed, and all its contents are accessible via the pre-move commit.