Are you a network administrator?
Are you a programmer?
Are you a DBA?
Do you use Office 2010?
Do you like free technology books?
If you said yes to any of the above, free Microsoft ebooks are available for Windows 7, Office 365, Office 2010, SQL Server 2008 R2, SQL Server 2012, Visual studio 2010, Programming Windows 7 Phone and Virtualization.
Enjoy. Books are available at link below.