Giving it a serious go

Hi my name is Crystal. I've struggled with some weight gain over the past year due to birth control issues and have not had success in losing the weight gained. I've decided to kick up my game and get super serious about it. I haven't been happy with my body image and I'm ready to go all in and do something about it. I only have 20lbs to lose to go back down to my "normal" weight. My goal is to lose this and tone up my body, then eventually gaining muscle.