This is not a strict division, but lessons can be classified as to what is initially useful to yourself, to your group, and to the whole community.
Lesson material is licensed under CC BY-SA 4.0. Code examples: OSI-approved MIT license. You are free to use this material, but please let us know - it is important for us to know whether this material has impact outside of our workshops.
We would love that! Contributions via the forking/pull-request workflow are most convenient. How to do this is covered in the collaborative Git lesson, but please contact us if you are unsure how. We also welcome any other contributions or suggestions regarding our lessons, including suggestions for new lessons - stay in touch!