I would like to convert the “ActionScript 3.0 Developer’s Guide” into an OpenFL guide, it is a creative commons “share alike” work, so we would be able to release a modified version for free. I think that would be really valuable, but it takes time
This might be a helpful starting point in the AS3 version:
http://help.adobe.com/en_US/as3/dev/WS5b3ccc516d4fbf351e63e3d118a9b90204-7e3e.html
A lot of the same concepts apply, and aren’t hard to understand
We also have multiple samples available
There’s also some resources here