
http://www.uspml.com/index.html#learn
http://uspml.com/documents/japanese_mahjong_guide_v103.pdf
I devoted a lot of time to this project over the summer with a view to producing a comprehensive guide to the terminology and rules of modern Japanese mahjong. I'm hoping a lot of people will find it useful and informative.
I'd welcome any and all feedback, comments, corrections and suggestions. I've already spotted one typo (doh!) so there will be another version at some point and I'll give credit to anyone who contributes.
Thanks,
Bart