Below is the link to a free ebook from Microsoft Press on Windows Auzre.

http://blogs.msdn.com/b/microsoft_press/archive/2013/10/01/free-ebook-introducing-windows-azure-for-it-professionals.aspx?loc=zTS1z&prod=zWAz&tech=zOttechz&prog=zPressz&type=zBLz&media=zBKz&country=zUSz

Most of the Windows Azure services are described in some detail, with screenshots used to demonstrate some of the multitude of capabilities of the platform. And for the experienced there are lots of under-the-hood insights and expert tips written by Microsoft insiders who develop, test, and use the Windows Azure platform.