To decide on the yoga style that's right for you, ask yourself these three questions:
Are you doing yoga for fitness and to get in shape as well as to explore the mind-body connection? Then choose a more vigorous yoga style like power yoga, ashtanga yoga, or Bikram yoga. All three styles combine an athletic series of poses into a vigorous, total-body workout.
Do you have an injury, a medical condition, or other limitations? Then start with a slower class that focuses on alignment, such as Iyengar yoga, Kripalu yoga, or viniyoga.
Are the meditative and spiritual aspects of yoga your primary goal? Then try one of the yoga styles that include plenty of meditation, chanting, and the philosophic aspects of yoga. For example, you might try kundalini yoga.