Welcome to the J Showcase. Take a tour of expository articles, view the graphics and try the puzzles. Contributions are welcomed.
Essays: More text than code, these articles help you learn to think in J
Bibliography: Bibliography of APL and J in chronological order
Puzzles: Problems to exhibit & strengthen your J muscles
Articles: A collection of published articles on J
Books: Books on J
Gallery: J graphics gallery
Studio: Basic examples of J code