Here are slides containing more content than a blackboard talk I gave in May 2015 in Freiburg:
Git versioning (why and how) for Mathematicians
Git Logo by Jason Long is licensed under the Creative Commons Attribution 3.0 Unported License.
Why mathematicians should use (distributed) version control systems like git, and a small tutorial to get you started.

Here are slides containing more content than a blackboard talk I gave in May 2015 in Freiburg:
Git versioning (why and how) for Mathematicians
Git Logo by Jason Long is licensed under the Creative Commons Attribution 3.0 Unported License.