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I just heard that Priyaa Varshinee, Sophie Libkind, Angeline Aguinaldo, Nelson Niu and Paul Dancstep at the Topos Institute are writing an introduction to AlgebraicJulia, which will apparently also be an introduction to the category theory concepts used in AlgebraicJulia. Apparently this book in progress is available online somewhere, but I don't know where.
I think this could be a really interesting book.
I know where it is but I'm not sure whether they want it shared yet. I'll check if Priyaa isn't successfully summoned here.
Oh that sounds wonderful: student's have asked for something like this a few times, so I'd love to have a self-contained reference to point to!
I stumbled upon this thread today entirely by accident and would like to clarify that I had nothing to do with writing this book—not sure how that rumor got started. That said, it looks to be an excellent book, and I do know that you can find it here: https://toposinstitute.github.io/RelationalThinking-Book/
and you can read Priyaa's story about writing it in the blog posts here, here, and here