So sorry to hear about your son being dx'd. Its hard at any age but the teen years are rough enough without this crap too.
another thought re: resources and support for you and your family is to check with the closest MS center (usually a university hospital, such as ucsf) to you for support groups. Also, I think finding your local chapter of the ms society is a good idea too. They have information and support resources especially for the newly diagnosed. My second recommendation is to read anything and everything you can find on ms-- the disease process theories, treatments, etc. read it all, even the stuff you disagree with. On this board there are lots of links for research to get you started. It's probably so confusing and overwhelming right now but in your own time, researching and reading is really helpful to understand and move forward. Ms is a very contentious disease that has many theories. Along with those theories are treatments. Some are very unorthodox but knowing as much as you can will help you decide what is right for you and your family. And don't be afraid to ask questions here