For further information on your specific disease state and managing your care at home, the following links may be helpful:

Asthma and Allergy Foundation of America  
http://www.aafa.org

and their COPD Guide 
http://copdguide.com

American Association for Respiratory Care
http://www.AARC.org

American Cancer Society
http://www.cancer.org/

American College of Allergy, Asthma, and Immunology
http://www.acaai.org

American Heart Association  
http://www.americanheart.org

American Heart Association patient information link   http://www.hearthub.org

American Lung Association  
http://www.lungusa.org

American Sleep Apnea Association  
www.sleepapnea.org

National Home Oxygen Patient's Association
http://www.homeoxygen.org/about.html

National Multiple Sclerosis Society
http://www.nationalmssociety.org

WebMD
http://webmd.com