Here are a few in-depth study resources. Please enjoy!

Links to PDF files:

Evolution of the Precepts

Jewel Mirror Samadhi Study

Keizan Study

Also, here is a link to Andy Ferguson’s very nice lineage chart:
http://www.southmountaintours.com/images/zen_ancestor_map/AM150306.pdf

and Andy has a nice page with the pronunciation of many Chinese Zen masters here:
http://www.southmountaintours.com/pages/ancestor_names/ancestor_names_table.html