DAX in the BI Tabular Model Whitepaper and Samples

http://www.microsoft.com/en-us/download/details.aspx?id=28572

PowerView Demos

http://blogs.msdn.com/b/oneclickbi/archive/2011/12/27/more-demos-of-power-view-available.aspx

SSRS Team Blog

http://blogs.msdn.com/b/sqlrsteamblog/

Learn DAX Basics in 30 Minutes

http://social.technet.microsoft.com/wiki/contents/articles/7040.quickstart-learn-dax-basics-in-30-minutes.aspx

PowerView Overview

http://social.technet.microsoft.com/wiki/contents/articles/3726.power-view-overview.aspx

Building Stylish Power View Reports

http://channel9.msdn.com/Events/TechEd/NorthAmerica/2012/DBI302

Power Query Reference

http://office.microsoft.com/en-us/excel-help/microsoft-power-query-for-excel-help-HA104003813.aspx