Mr Boss Level Design: Platform Primer
I keep referring back to this but have to search for it every time, so here it is. So good.
Also read this earlier today (thanks Matt!), twas informative.
Why Angry Birds is So Successful: A Cognitive Teardown of the User Experience.
**Edited** More Link Dump
It's a bit of an effort finding my way around the Torque documentation, so here's a collection of links for scripting/coding for my convenience.