Currently I am preparing to pass the exam of Exam 70-457-Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1. I have several material to work with. But let me mentioned that Microsoft has worked really great when in terms of preparing for your exam of SQL Server database certification, they have all the training tutorials available on their websites with complete detail. I would recommend you to go there and study on your own this will help a lot. This will save your time and money as instead of purchasing your complete video training for this exam you can have the experienced information directly from microsoft.
http://www.microsoftvirtualacademy.com/training-courses/administering-microsoft-sql-server-2012-jump-start