You have to be sure to really give your deltoids a work out.  Pulling exercises, like rowing, work the back of a person’s deltoids, while pushing exercises, like push-ups, work the front.  You need to work the middle, too, don’t forget.

Resting is vital for any workout routine, too.  So, if you want to build shoulder muscle quickly, just choose a few exercises and do them well.  You don’t want to over exert yourself, after all.  Leave plenty of time to rest between routines.

One exercise that you might try is the overhead press.  An overhead press should be done with dumbbells, but you can also use a bar.  It is an upward pushing exercise, which is a great way to work out your shoulders.

Another option is a lateral raise.  Lateral raises isolate the shoulder muscles. The trick is to start with dumbbells down at your sides and then raise them.  It’s an excellent exercise for your shoulders, as long as it’s done properly.

Whichever exercises you choose, remember, the quality of your exercise is vital.  If you aren’t doing the exercises properly, you won’t build shoulder muscles quickly, like you want to.  Quality of workout is what is most important, not quantity.