1.
Project Description - Annotated
Starter Content Inventory Spreadsheet
Our Example Mindmap
Wireframe

2.
Advanced Custom Fields Plugin for WordPress
BrainTraffic: An Intro to Metadata and Taxonomies
Conductor Plugin: WordPress Content Types Without Code
Tuts+ Guide to Content Types and Relationships in WordPress *
* This is an amazing 9-part series by Rachel McCollin that explains
content types in WordPress starting with the database itself.
It gets technical, but I highly recommend it!!

3.
Examtime.com : Tips on How to Create a MindMap
Content Inventory/Audit Description and Resources
Annotating Wireframes
Cleve Gibbon's Awesome Guide to Content Modeling