Early Start!

So my New Year Resolution:
Loose weight and keep it off!
So I got a gym membership again. I am also drinking a lot more water. Trying not to eat as much sugar/starch/carbs.
So I am trying to do cardio three days a week and then weights/strength training 3 times a week.

My long term goal, loose 100 lbs.
First off, I would like to reach my pre-pregnancy weight.