Ok, I know I said I was done with the IOS XR stuff, but just had to share this.
Cisco has posted some Videos on YouTube, they are below for your enjoyment.

Also, if you are looking for an IOS XR book – here is a link to the one on Amazon.

Introduction to IOS XR CLI and Configuration

Overview of IOS XR Software Installation

IOS XR Routing – BGP

IOS XR Routing – IGP and Static

IOS XR Routing Policy Language (RPL)

ASR9000 Hardware Spec Information