I can't recommend it enough, it's great for stress, for dealing with difficult emotions, to lower blood pressure. I have ADD, it helps me with that to slow my brain down, I function much better on the days I do it. It's takes time and effort, but it's not difficult, the more you do it the better you get. There are a number of ways to do it, they all work, there is no one right way.
My method is to put on some soothing music. I use Pandora and created a station called "meditation by the sea" . Music is not necessary, but it helps me keep my brain from wandering. Close your eyes and make sure you are not holding tension in your body, relax your muscles as best you can (this takes time to get good at) Then you just close your eyes and breath in slowly through your nose and out through your mouth. I try to think of a pleasant scene, like the beach, and think about that, the waves, the small of the salt, the sounds. Alternatively, you can focus just on your breathing, the sound your breath makes, the air filling your lungs. At first your mind will wander, so just keep bringing yourself back to your breathing or pleasant scene, if a thought intrudes (and it will) tell yourself you will think about it later. As you do it more, you will get better and will be able to do it longer.
Then, once you get a little better at it, magic happens. You will start getting a nice feeling, your body will release endorphins. You will also find you are able to get more relaxed. At first you may find you have really vivid dreams, but that goes away eventually. I think your subconscious has been watching to tell you things, but couldn't get through, your brain was to busy, lol.
If you are of the immediate gratification sort, here is a quickie meditation. Close your eyes and relax your jaw by slightly opening your mouth. Breath in slowly through the nose, for eight seconds, hold your breath for eight seconds, breath out slowly through your mouth for eight seconds. Repeat a few times. I use this when I am in a stressful situation.