Came across @Tomas Petricek's teaching materials and would like to especially highlight these two courses here:

• Write your own tiny programming systems — build your own tiny versions of ML, Basic, HM type system, Prolog, Self, Excel
• Programming Language Design — fantastic resources that embed technical language features into a broader perspective of design and culture

This is the kind of resource that is absolutely amazing to be publicly available under such permissive license.

Seriously, look at the tiny programming systems and bootstrap your way into your favorite programming environment in an afternoon or weekend. Don't miss the source code for the demos in the same repo. The only things missing are a TinyLisp and a TinyForth, but you can find those easily somewhere else on the Internet.

Saw Will Crichton's Rust for Everyone! talk earlier oh his research into tooling to help people understand programs. The program slicer (highlights all lines impacted by the current line) seems particularity useful for understanding large functions.

Python: The Documentary | An origin story is a somewhat surprising movie, in the sense that I haven't seen anything similar yet in the Open Source universe. I'd summarize it as an autobiography of the Python community. In general, I am not particularly interested in autobiographies. But as an ex-member of the Python community, it was nice to see the aged faces of people I interacted with in the past, or even just faces to put on the names of people I never met but exchanged lots of e-mails with at some time.

Still, I'd be much more interested in a history of Python and its community, written by a trained historian and adding historical context and outsider views to the memories of the main protagonists.