An all time classic exercise for the shoulders, this exercise is also good for the traps and neck muscles as well. The important thing to highlight is that doing this exercise too fast is not the way to go. If you go too fast you risk pulling a neck muscle or injuring your shoulder(s). Thus, proper pace is the key to executing this movement.
If you are a beginner you can still do this exercise but with lighter dumbbells. After several weeks you can start bumping the weight up slowly to challenge yourself more and keep your muscles primed for growth.