Fit Bit Questions

Ok...just got mine yesterday! Excited to get started. Have a friend on fit bit already, was wondering how you do challenges with friends? I cant find anything??? Also...It shows me on the right how many steps my friend has taken in a 7 day period, any way to see how many she has taken just today? If you do challenges with people how can you see just a daily step total? There website is a little confusing, to me anyway! Any help is appreciated!