I want to learn how to build Windows 8 apps, but know not a thing about Using Visual Studio 2012 since almost all my experience has been with XCode. I'm trying to find decent beginner video ...

You have a 50/50 shot at accessing a new experiment from the Visual Studio dev team that integrates tutorials with the IDE for an experience that combines guidance with live code.

Get Microsoft SQL Server Data Tools – Business Intelligence for Visual Studio 2012, then download it. The installer should start and any updates should be included.