I've recently finished reading Learning J <https://www.jsoftware.com/help/learning/contents.htm> and made a summary of it in the form of what turned out to be a cheat sheet. I did manage to find two similar sources (here <https://code.jsoftware.com/mediawiki/images/5/53/J602_RefCard_color_letter_current.pdf> and here <https://www.jsoftware.com/books/pdf/brief.pdf>), but having another version couldn't hurt I suppose.
The cheat sheet repo can be found here <https://github.com/dankilman/j-cheat-sheet>. I'll be more than happy to accept PR's with improvements and whatnot. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
