Saddle for beginner rider!
As @Kibbee stated give a little time. Don't expect to be able to do a one hour ride and be painfree the next day. Try to increase your saddle time gradually over a couple weeks. You can do several short rides a day to toughen-up the sore spots. The saddle may not be the only issue. Did you consult with anyone about bikefit? The bike may need some adjustments to fit you correctly. If after a few weeks your body is still complaining take your bike to your local shop. Have them look at your bike and the saddle. Explain to them where the pain is and ask for help in choosing a saddle that fits your body. Most shops will give a fit or comfort guarranty for a certain number of days.`