Here are some great resources that will help you learn more about Montessori

Explains the Montessori Method
http://michaelolaf.net

Supporters of Montessori
http://www.michaelolaf.net/google.html

Montessori Movement
http://www.montessoricentenary.org

Connecting to the Montessori Community
http://montessoriconnections.com

International Montessori Association
http://www.montessori-ami.org