This Louisiana DOE web page has some pretty good links to PARCC information in general, but Louisiana has also prepared some documents that consolidate scattered PARCC documents into one area. Very nice.
Comprehensive PARCC document from 2012 (version 3.0) of what is happening at each grade level and what the major, supporting, and additional areas of focus are.
Achieve the Core has put together this list of major, supporting, and additional content areas with the key instructional shifts. This is helpful when deciding which areas demand the most attention.
Are your students stressed-out about learning? This article discusses how students learn better when content and activities are relevant to their lives. Very good Edutopia article.
Want to try a PARCC test yourself? Maybe your students need a little preview of coming attractions? This page should allow you to access the various PARCC samples and practice tests. Note: Many pages on the PARCC site are constantly changing, so let me know if this link no longer works.
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.
NYC's DOE put together a comprehensive and searchable set of sample problems that teachers can use to step-up the rigor in math class. This page allows you to use keywords, grade level and subject to filter results.
This Education Week opinion piece is from a high school math teacher in Kentucky, where the entire state has pulled together to implement the CCSS in a comprehensive, unified manner.