We now have a Tripal Developer's Handbook online. You can find it here: http://gmod.org/wiki/Tripal_Developer%27s_Handbook The handbook provides instructions and examples for customizing template files and using variables for accessing any and all data in the Chado database. A second section is available with instructions for creating custom modules. The handbook highlights best practices for interfacing with Tripal. If you have any questions or comments or notice any missing items please feel free to let us know.