A well rounded program should involve lots of primary movement exercises; for instance, squats, lunges and chest presses. These exercises incorporate the movement of multiple joints and muscles. Once you feel comfortable doing primary exercises, and your body has adjusted well, consider introducing secondary exercises to your routine. Secondary exercises, such as bicep curls, focus on single joint movements and target specific muscles or muscle groups.
Start off by doing 3-4 primary exercises, 3 sets and 15-20 repetitions, followed by an aerobic exercise of your choice, i.e. biking or running. Once you are comfortable doing this, decrease the number of repetitions to 8-10 and add secondary exercises to your routine, keeping the secondary exercises to 3 sets of 15. Finally, finish off your workout with about 10 minutes of stretching. Overall a well rounded program should challenge all aspects of your fitness, including muscular strength, muscular endurance, flexibility, cardiovascular system, and balance.
Remember to consult with your doctor before beginning a new training program.