Hi, on the internet (some reddit post it was I think) I found a very nice looking "Reference Card For J", which refers to J 602.
There are some other tutorials, books and such, which are based on previous versions of J. At the current point of my knowledge about J (read: bloody newbie) I cannot estimate, whether it makes sense to learn from such sources or not - I want to avoid to "unlearn" things later. Especially this https://www.learningj.com/book.htm#toc book I like very muchm since it shows things the way I normally like to learn new things. Question extracted from all these lengthy words is: What way of evolving J does ? Adding more things and keeping everything backward compatible (so I need only to add new things later) or "super high dynamic" :) which means: Every day the syntax is totally changed and verbs older than a month will be thrown out and replaced by totally diffent verbs...and I have to unlearn everything in a 14 day cycle... :) ;) 8) (I exaggerate here just for fun! ) Cheers! Meino ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm