See your doctor before you start any exercise program. If you haven't worked out in a while (or ever) start with a walking program of about 20 to 30 minutes, 3 days a week. Every day, ask yourself how you will make your life healthier. It can be as simple as drinking more water or parking farther away from the front door.
I can give you a lot of specific excercises if you message me in my inbox, but you can do 15-30 minutes walking in your neighborhood a day, then strength training 6 out of seven days of the week one day lower body one day upper body, you can do scissor kicks, open close legs, crunches, bicycle, side twists, chair dips, planks, push ups, sit ups, side twists. there are a lot of different options. =)