For starters, avoid posting, tweeting, messaging, FBing or any other conversation about it. Best bet is not to tell anyone who doesn't need to know until after it is over. The judge and courthouse staff will tell you everything you need to know in order to serve.
Seriously, nothing good can come of reading the comments you'll get in this thread (except this post, of course). You are supposed to decide the case based only on what you hear in the courtroom, and you are bound to have all sorts of improper outside influences if you invite conversation about even just the fact that you are serving on a criminal jury. The parties have a right to try the case to the jurors they selected, and not have them influenced by things outside the courtroom.
Good luck, and thank you. The system depends on people like you taking it seriously.