I just learned about a free ebook from Microsoft Press in July 2014 that everybody interested in designing applications for Azure should read.
This book is Building Cloud Apps with Microsoft Azure: Best practices for DevOps, data storage, high availability, and more, by Scott Guthrie, Mark Simms, Tom Dykstra, Rick Anderson, and Mike Wasson.
And this book does not come alone! It comes with a great website called Building Real-World Cloud Apps with Azure.
This is a must see for any Azure enthousiast.