FitBit Friends!

Hey guys, I just got a fitbit charge hr as an early 21st birthday present and I am wondering if anybody wanted to add me? Id love to do some challanges with people and motivate each other.. Im not sure how you add people yet or what my username is..guessing its just my name Briony King? If that isn't my username then I will have a go at adding other people. I have put some details about myself below:
20 year old Female
From England
5ft5
Start weight 10 stone 1 pound
Current weight 9 stone 5 pounds
Goal weight 8 stone 7 pounds ( or when I am happy with myself)
I am also looking to tone up