This is a list of some great Common Core resources:

Common Core Website 
"Nine Ways the Common Core Will Change Classroom Practice" by Robert Rothman - Breaks things down in Math and English Language Arts!
Common Core Myths vs Facts
Common Core Shifts
The Hunt Institute - Videos
Mastery Connect App and Widget
Parent's Guide to Student Success - Handouts for each grade level.
Parent Roadmaps to CCSS   
LearnZillion - Lots of lesson plans and materials!
Teaching Channel - Video   100+ Common Core Lesson ideas, objectives, questions, standards, and supporting docs
Core Planner  Totally FREE at this time...take advantage of this neat resource
Core Task Project   
Twitter - #ccchat  - Twitter chat for Common Core - resources, discussions, and ideas shared