How much weight do I have to lose and help losing it?

Posted: 29 Jun 2013 01:09 AM PDT

I have two questions.. 1) I'm 14 and I'm 5'2....around how much do I have I lose if I weight around 150 or a bit under that..? 2) any good ways to lose it? Like an excercise routine? How long would it take to lose what I have to lose?