National Institutes of Health
National Institute of Mental Health: Bipolar Disorder
Facts about bipolar disorder, its causes, symptoms, diagnosis, and treatment. Includes information about how to get help if you have it, how to help someone else who has bipolar disorder, and how it affects those around you.
US National Library of Medicine
Medline Plus: Bipolar Disorder
Encyclopedia article with health information about bipolar disorder: types, symptoms, treatments, tests, prognosis.
Curated OER
Kids Health: Why Am I in Such a Bad Mood?
This article from KidsHealth.org is written to help you understand feelings such as anxiety, sadness, and irritability and gives some ideas for ways to overcome the blues.