The Liddy Shriver Sarcoma Initiative has a number of articles useful for the newly diagnosed.
A guide to the sarcoma universe:
http://sarcomahelp.org/newly_diagnosed.html
The importance of second opinions:
http://sarcomahelp.org/sarcoma_second_opinions.html
The importance of treatment at a specialty center
What sarcoma support is available in your area:
http://sarcomahelp.org/sarcoma_resources.html