If you are looking for self study materials for System Center 2012. Here are 3 link where you can find a lot of links to different materials:

• System Center 2012 Self-Study Guide (Part 1 – System Center Overview)
• System Center 2012 Self-Study Guide (Part 2 – Advisor and App Center)
• System Center 2012 Self-Study Guide (Part 3 – System Center Configuration Manager)