The U.S. Green Building Council (USGBC) is a non-profit organization to educate businesses on green buildings. Check out the usgbc.org to learn about green building, join as an organization or sign up for courses and workshops.
The Green Building Certification Institute (GBCI) is a separate organization that supports USGBC by administering credential programs related to green building practices.
A rating systems was developed called the LEED ®, Leadership in Energy and Environmental Design. This LEED Rating System offers LEED-based education programs. Check out gbci.org to find out how to volunteer, to have rating resources or to register for an exam.