Microsoft Press publishes books and eBooks on Microsoft products which you can purchase if you have subscription of safari Books online , and Microsoft Press also offers few chapters of those books as free eBooks to users.
Here are recent free eBooks given away by Microsoft Press you can download in XPS or PDF format
Moving to Microsoft Visual Studio 2010 (DRAFT Preview)
Moving to Microsoft Visual Studio 2010 (DRAFT Preview II)
Code for “Moving to Microsoft Visual Studio 2010” DRAFT ebooks
Introducing Microsoft SQL Server 2008 R2
Programming Windows Phone 7 Series (DRAFT Preview ) (by Charles Petzold)
Own your Future : Update your Skills with Resources and Career Ideas from Microsoft
Understanding Microsoft Virtualization Solutions (Second Edition)
First Look Microsoft Office 2010
Windows 7 Troubleshooting tips