Here's a basic yet effective move to target your shoulders.
Stand with your feet hip distance apart. Hold a dumbbell in each hand so your palms face in toward the sides of your body.
Start with your right side first. With control, keep your arm straight (but don't lock that elbow), and as you inhale, raise your right hand up toward the ceiling. You want your palm to be facing down and your arm to be parallel to the floor. Then, as you exhale, slowly lower your hand back to your body. You should be able to see your hand in your peripheral vision. Your arm won't be directly out to the side but slightly forward.
Do the same move with your left arm.
Then do both your right and left arms at the same time.
Continue these moves — right, left, together — for a total of two to three sets of 10 reps.