Caution and good technique should always be used when performing any form of exercise or workout, however this is especially true when it comes to your shoulders. Your shoulder joint is capable of the greatest range of motion than any other joint, for this reason it is more prone to injury.
Barbell shoulder press: 4 sets of 8 - 10
Reps Alternating front shoulder raises: 3 sets of 8 - 10 reps
Dumbbell shoulder press: 3 sets of 8 - 10 reps
Single arm side cable shoulder raises: 3 sets of 10 reps
When performing these or any exercises please use weights you can complete your first set with comfortably.