I have put the slides about afni_proc.py scripting in a Google Docs folder, which you can access at
https://goo.gl/uK4Tt7
You will also find some "real-life" scripts used for the work in a recently published paper. See the AAA.README.txt file in this folder for a description of the contents.
This link might also be helpful, as an introduction to shell scripting for AFNI:
https://afni.nimh.nih.gov/pub/dist/doc/htmldoc/background_install/unix_tutorial/basic/basic_03.scripts.html
