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