Recently, there are free eBooks available for public from Microsoft Press. This is especially for people who love Windows Server, Windows Store, Windows OS, Programming and Windows Mobile.

 You can click each link and download. These are available in the form of PDF, Mobi and ePub.

Link here : http://blogs.msdn.com/b/microsoft_press/archive/2012/05/04/free-ebooks-great-content-from-microsoft-press-that-won-t-cost-you-a-penny.aspx