PARCC is the organization New Jersey is associated with for State testing, but the Smarter Balanced Assessment Consortium is also a good resource for Common Core standard-related assessment items.
Scholastic has quality resources, and this overview of the Common Core's mathematical practices is an excellent source of information and links. If you want to ensure your expectations are high enough to prepare students for PARCC testing, this page is a useful start.
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.