General Cancer Resource Sites

• American Cancer Society
  
  A comprehensive resource site provided by the American Cancer Society
•   Cancerbackup
  
  "Welcome to Cancerbackup, Europe's leading cancer information charity, with over 4,500 pages of up-to-date cancer information, practical advice and support for cancer patients, their families and carers."
•   NCI Cancer Topics
  
  The US National Cancer Institute's resource for cancer information. Includes the excellent PDQ documents for professionals and laypersons