You can contact me via my email: "arnold dot crk at gmail dot com".
If you see any issues, please open an Issue or Discussion on the book's GitHub page. Or, if you know Git, you can open a Pull Request to fix the issue directly, which is even better!
If you are interested in contributing text, please email me and we can make it happen!
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
