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This is a collection of articles in the author's popular series on the J computer language for beginners, first published in VECTOR, the journal of the British APL Association. 41 articles range across topics of interest to mathematics teachers and hobbyists. NOTE: This is Edition 1. It is a historical document of purely archival interest, published in January 2009. DON'T BUY IT IF THAT'S NOT WHAT YOU WANT. Edition 2 (green cover) is now available, with Lulu reference number: 7405758.