Betts 2012 [PDF + code samples]
Exploring CQRS and Event Sourcing
A journey into height scalability, availability and maintainability with Windows Azure
Dominic Betts et alli.; Jul 2013 [376 pages]
This guidance is designed to help you get started with the CQRS pattern and event sourcing. It is a journal that describes the experiences of a development team with no prior CQRS proficiency in building, deploying (to Windows Azure), and maintaining a sample real-world complex enterprise system as a reference implementation (RI) to showcase various CQRS and ES concepts & techniques.