Hi all,
Just wanted to share a recent tutorial I made which goes into scripting for After Effects. It gives a short overview of scripting, Javascript and resources online for learning each. Then I show how to create a script (with simple GUI) for applying a time offset expression to a number of layers that will follow a pre-defined animation at a pre-defined offset.
http://www.creativecongo.com/time-offset-script-tut/
Let me know if you have any questions or even requests for tutorials, scripts or functionality!