Dr. Terry K. Talley, of Rice University, is offering a free course on the Next Generation Science Standards through the Coursera platform. From the overview: This course is designed to guide science educators towards an understanding of the NRC Framework and how to integrate the Scientific and Engineering Design Practices into classroom instruction.
Coursera partners with universities to offer courses for anyone to take, for free. The classes work like most online opportunities with readings, video and discussion boards to move users through materials in a productive manner. You can sign up to Coursera and view all of their courses here and the Framework for Science Education course here.