Welcome! We are so glad to have you aboard. You just come right on in and make yourself at home. Do check out that link above so that you can see what the challenge is all about and get some instruction on how to participate. We have been having a great time with our challenge!
This is also a great post that Ranae made a bit back that tells some of how to get started as well....
http://www.medhelp.org/posts/show/634021 It will give you an idea how our group works and some things that you can do to get started, like setting up trackers for your health information like weight, exercise, mood, etc. I am certain that you will find great support here and make friends that are striving for goals similar to your own on this journey. Just let us all know if we can help. Hope to see you around soon!