Upright row with the use of exercise bands will help you get started if you want to develop your traps and shoulder muscles.  What makes this ideal for beginners is that it uses bands instead of weights as you get familiar with the proper form.  This is a compound exercise that uses a pulling force to build strength in your target muscles.  Before you start with this exercise, be sure to check the integrity of your bands by looking out for tears, and possible dislodgement of the handles.

To start, stand on your bands with your feet close together.  Assume a pronated position with your hands (your palms directed towards your thighs) and grasp the handles of your band.  Make sure that your legs and back are straight.  Your arms are firmly positioned at your side and your elbows are slightly bent.  Your hands should be resting on top of your thighs as you firmly hold the handle.

Lift the handles using the muscles at the side of your shoulders while you exhale.  You should feel your shoulder muscles contracting as you use your elbows to drive the movement.  Your end point should be with your elbows raised at your side higher than your forearms, with the handles nearly touching your chin.  Keep your torso in a stationary position and pause for a second when you reach the end point.

Return to starting position by slowly lowering the handles down.  Remember to inhale as you do this motion.  Do the number of recommended reps according to your fitness level.  Once you have mastered the form, you can use an e-z bar or a set of weights to increase the level of difficulty.  Use of weights must be done with the help of a trainer for proper biomechanics to prevent yourself from getting injured.