Starting any new fitness routine takes a bit of planning. First, you may want to come up with some initial goals. How long do you want to work out at first? How many times per week? What time of day do you want to work out? Think about the time you will need for a warm up and cool down before and after each workout. Buy good-fitting, supportive shoes. If you plan to walk or run, decide on a route. And decide if you would like to work out alone or with a buddy.
Make sure to talk with your doctor before starting any new exercise routine.