I am not as familiar with bone cancers as I am with some others. If you come across resources that you feel are helpful please let me know and I will add them.
Bone and Cancer Foundation
Bone Cancer Research Trust - UK group
Liddy Shriver Sarcoma Initiative - Parts of this page can be translated into 26 different languages
MDJunction - Bone Cancer Support Group
Survived 2B Alive! - Sarcoma information and a diverse list of supports for many of the more varieties of sarcoma