[liveranga]

There's a handful of resources around that look fun though I haven't dug into them yet.

There's this on the J wiki: https://code.jsoftware.com/wiki/User:Brian_Schott/code/feedf...

And there's this YouTube series for APL: https://youtube.com/playlist?list=PLgTqamKi1MS3p-O0QAgjv5vt4...