www.usgbc.org
USGBC and LEED information. You should register on this site as soon as possible. Not only will you have access to valuable information, but the exam may have questions whose answers can only be found on this site.
www.areforum.org
This is a GREAT source for information. You can ask questions and read accounts from other victims and survivors of the LEED AP Exam. I still frequent this site.
The Sustainable Building Technical Manual
www.greenbiz.com
From the greenbiz website, a pdf copy of “The Sustainable Building Technical Manual”. I found this extremely useful for increasing my understanding of the sustainable design and building process. I highly recommend it.