NGSS One Pagers
This three page pdf document provides general information of each of the three dimensions of the NGSS specifically the science and engineering practices, disciplinary core ideas, and the crosscutting concepts.
This two page pdf document provides a detailed look at the architecture of the NGSS standards.
This pdf shows how the practices of the NGSS, CCSS-Math, and CCSS ELA intersect and support each other.
Here you will find a complete matrix of the disciplinary core ideas of the NGSS by domain
Great link to explain why these standards are important
NSTA Position Statement that outlines the reasons why NGSS is important to the improvement of science education.