If you are beginning an exercise routine, don't jump into an advanced routine all at once. Work your way up with small and beginner moves that will help you learn posture, establish tone, and start shedding pounds.
Moving On Up
Once you feel like you've established a good routine, move on up to immediate moves. Adding weights will help immensely. They will give you extra oomph to do more and push your body more. Learn more about them.
Make It Intense
When you feel like you can take in an intense workout, consider doing programs such as Jillian Micheals' DVDs or P90X. These will help touch on all the muscles on your body and go through different forms of exercise, from cardio to yoga.