r/zen is a reddit forum about Zen scholarship, study, and practice.
Summary:
Zen Teaching: Recorded Sayings of Zen Master Joshu: https://www.amazon.com/Recorded-Sayings-Zen-Master-Joshu/dp/157062870X/
Reddit Post: https://reddit.com/r/zen/comments/yigo49/the_wrong_man_and_the_right_way/
Zen Lineage: www.reddit.com/r/zen/wiki/getstarted