Hi, my name is Matt and I am 20 years old, just diagnosed about a month ago. When I first found out I wasn't even sure if I was going to tell all my family let alone friends. It kind of depends on your level of comfort with yourself, the disease, and your family/ friends. I'm pretty comfortable with everything so all my family knows and I told all my close friends over the phone, didn't think a facebook bulletin was appropriate LOL. I did tell ALL my friends, just the close ones from work or growing up in school. I just didn't feel like everyone had to know, so I would say of all your friends, tell your close friends who you talk to on a pretty regular basis, I always started my conversations with something like "just have something that I should tell you, I don't expect you to know how to react to this so it's no big deal" and then I would tell them that I was just diagnosed with multiple sclerosis and I would explain to them what MS is.
I am including a link to an article I wrote about MS on my blog, I wrote it for readers with little to no medical knowledge, my intentions were to give my family and friends something to read that they could understand so they would understand my disease and what I'm going through, maybe it will help you too since I wrote it in simplest of terms with simple examples that anyone should be able to grasp, good luck!!!
http://mattsms.blogspot.com/2010/09/so- ... rosis.html