Learn APL
Learning APL jupyterbook. See it in its published state on https://xpqz.github.io/learnapl
If you prefer, you can download the whole thing as a single pdf file.
If you find errors, please raise an issue so I can fix it.
This is -- and will remain -- a work in progress; I'll keep adding material sporadically.
Many thanks for checking it out! For APL-related conversations, try the APL Orchard chat room.
I gave a presentation on how and why this book came to be at the Dyalog '21 conference. You can watch it here.
@xpqz