In case you missed this there is a free download for the following books:-

1. Introducing Windows Server 2008 by Mitch Tulloch with the Microsoft Windows Server Team (ISBN: 9780735624214) This e-book covers Windows Server virtualization, managing Windows Server 2008, Active Directory, Terminal Services, and failover clustering.
2. Microsoft Windows PowerShell Step by Step by Ed Wilson (ISBN: 9780735623958) This e-book includes an overview of Windows PowerShell, using Windows PowerShell cmdlets, and leveraging PowerShell providers.

at https://www.microsoft.com/learning/windowsserver2008/default.mspx

The e-book will load up in the browser, from IE, click "Page -> Save as" to save the PDF file locally...

Enjoy!!!!

Cheers Dave