Free ebooks from Microsoft

Eric Ligman, Microsoft Partner Program Director, has posted a blog link to a large, free collection of Microsoft books in a variety of areas: SharePoint, Visual Studio, Windows Phone, Windows 8, Office 365, Office 2010, SQL Server 2012, Azure, Cloud, Lync, Dynamics CRM, etc.
Topic No. 1 (about 60 books)
Topic No. 2 (24 books)