I just published out the draft copy of the Configuring The General Ledger Within Dynamics AX 2012 (Volume #3 of the Bare Bones Configuration Guides series) on the Dynamics AX Companions website.

If you want to take a peek at what I am working on then here is the link: http://www.dynamicsaxcompanions.com/Bare-Bones-Configuration-Guides/Configuring-The-General-Ledger-Within-Dynamics-AX-2012