Trying to loose weight

I’m seen some really amazing weight loss transformations on here and I’m hoping to get some advice on how to loose some weight myself.

I went on the depo shot and stopped playing my college sport around the same time so the weight gain from the combo caught up with me. Now I’m 30 pounds heavier than I was and I’m hoping you gals have some advice on how to loose it quick before summer rolls back around. I’m trying to be happy with myself again.

Thanks!