Children's Cancer Web 
A non-profit site with information on specific childhood cancers including an annotated directory of related links.
http://www.cancerindex.org/ccw/Young People with Cancer: A Handbook for Parents 
This guide addresses some of the most common questions about cancer in the young, combining medical information with practical suggestions.
http://www.cancer.gov/PDF/81b46bc0-403d-4e46-8636-032d765eba4a/young_people(9-01).pdf
British Medical Journal: Second Primary Cancers after Childhood Cancer 
Article discussing risk of secondary Cancer in individuals that had the disease in childhood.
http://bmj.bmjjournals.com/cgi/content/full/312/7035/861
CureSearch 
Provides information on childhood cancer for patients, their families, physicians, and health care advisors.
http://www.curesearch.org/
Pediatric Oncology Resource Center 
Resources, web links, and references related for parents, friends, and families of children who have or had childhood cancer.
http://www.acor.org/ped-onc/
NCI: Childhood Cancers 
Information provided about pediatric cancers, treatments, prevention, resources, clinical trials, statistics, testing, and screening.
http://www.cancer.gov/cancertopics/types/childhoodcancers
Teenage Cancer Trust 
Mission is to raise funds, educate, and support teenagers fighting cancer. Provides information about health facts, challenges, conferences, events, news, shop, links, donations, and a forum. [UK]
https://www.teenagecancertrust.org/
NCI: Late Effects of Treatment for Childhood Cancer 
Information about how childhood cancer survivors have an increased risk of developing a second cancer later in life.
http://www.cancer.gov/cancertopics/pdq/treatment/lateeffects/Patient/page13
Catch the Butterfly Game 
Children's Cancer Research Fund illustrates how frustrating it can be to cure only eight out of ten children with cancer. Donations accepted.
http://game.childrenscancer.org/
Cancerbackup: Children's Cancers 
Provides general information, diagnosis, causes, treatment, clinical trials, resources, and types of childhood cancer.
http://www.cancerbackup.org.uk/Cancertype/Childrenscancers
Doctor David's Blog 
This is a Pediatric Oncologist's weblog. Topics covered include the biology of cancer, clinical observations, and patient histories.
http://doctordavidsblog.blogspot.com/