Grab your free electronic copy of Introducing Microsoft SQL Server 2012 from Microsoft Press.  This is a great resource to learn about the new features in SQL Server 2012.

Introducing Microsoft SQL Server 2012 includes 10 chapters:

PART I   DATABASE ADMINISTRATION (by Ross Mistry)

1.   SQL Server 2012 Editions and Engine Enhancements

2.   High-Availability and Disaster-Recovery Enhancements

3.   Performance and Scalability

4.   Security Enhancements

5.   Programmability and Beyond-Relational Enhancements

PART II   BUSINESS INTELLIGENCE DEVELOPMENT (by Stacia Misner)

6.   Integration Services

7.   Data Quality Services

8.   Master Data Services

9.   Analysis Services and PowerPivot

10.   Reporting Services

You can pick up the Kindle version for free here:  Introducing Microsoft® SQL Server® 2012 (Kindle)

If you prefer the paperback version you can get it here:  Introducing Microsoft SQL Server 2012 (paperback)