Here you will find the Common Core Standards along with resources including FAQ.
Your first stop to understanding CCSS is reading the standards in full.
"The Common Core State Standards Initiative is a state-led effort that established a single set of clear educational standards for kindergarten through 12th grade in English language arts and mathematics that states voluntarily adopt. The standards are designed to ensure that students graduating from high school are prepared to enter credit bearing entry courses in two or four year college programs or enter the workforce" -from the Common Core State Standards website.
CCSS was adopted in Massachusetts in 2010 with a goal of full implementation in 2013-2014. CCSS is not intended to replace the Massachusetts Curriculm Frameworks but to align with them.
Literacy Implementation Guidance for the ELA Common Core State Standards from the International Reading Association. The link below provides access to the guidelines as well as additional CCSS resources.