Microsoft is currently giving away free eBooks from their store, including: Windows 8.1, Windows 8, PowerShell, Server 2012, Exchange, Lync, etc etc. From what they said, they already surpassed 1 millions downloaded copies, in just 2 days! Which equivalent to 347 copies in a second! Dont forget to grab your copies from here ! Reference : http://blogs.msdn.com/b/mssmallbiz/archive/2014/07/07/largest-collection-of-free-microsoft-ebooks-ever-including-windows-8-1-windows-8-windows-7-office-2013-office-365-office-2010-sharepoint-2013-dynamics-crm-powershell-exchange-server-lync-2013-system-center-azure-cloud-sql.aspx