If you are interested in learning about science and health the following online resources are a great place to start. They are excellent and free! You are never too young or too old to explore areas of interest.
Open Courseware -- Open courseware are courses and materials put out by universities that contain both undergraduate and graduate subjects. Below are a few that you might find interesting.
Harvard Medical School Open Courseware - http://mycourses.med.harvard.edu/public/
Tufts Open Courseware - http://ocw.tufts.edu/
MIT Open Courseware - http://ocw.mit.edu/index.htm
John Hopkins Open Courseware - http://ocw.jhsph.edu/
Other Science and Health Online Resources
The Science Forum - http://www.thescienceforum.com/
A scientific discussion and debate forum.
Khan Academy - https://www.khanacademy.org/
More than 1200 video lessons in the areas of physics, chemistry and biology as well as basic arithmetic and algebra.
Learning Science - http://learningscience.org/
Learning community for sharing new and emerging tools to teach science.
Geology - http://geology.com/
News, articles, maps and other information about geology and earth science.
Feel free to add your favorite online places to learn about science and health.