I attended a workshop about PARCC and middle school math at the NJ Principals and Supervisors Association in March 2014. The presentation was made by people from TMI Education, and these links are from their presentation.
This is the PARCC page where you can click on links that take you to the actual online "live" samples of PARCC questions. You can click on math only questions for grade bands (3-5, 6-8, high school), or ELA only questions.
Need some posters that explain the mathematical practices from the Common Core in terms the students can understand? This page has links to displays for grades K-7.