https://www.youtube.com/watch?v=SDYdeVfMh48 - Marc Wouts, the author of Jupytext, gives a short introduction on Jupytext. Suitable for people who are new to Jupytext.

https://github.com/mwouts/jupytext - source code of Jupytext

https://marc-wouts.medium.com/ - Blog(?) of Marc Wouts, the author of Jupytext.