Ballet Abs - I don't remember doing any of these separately (except for crunches) when I use to dance. I got my "ballet abs" by holding it in during class for 10 years; however, these exercises are great for anyone.
Pretty much it. Calculate your BMR, and put yourself at a 500 calorie deficit every day of the week. Weight loss at one pound a week. This is the ONLY steady, healthy way to change habits and lose weight.