Breathing meditation is great for people with any level of experience in meditation (or no experience at all) as it's very easy to understand and works as good as other methods. Also, it is wonderful because you always breathe, so you have this object of meditation with you everywhere.
Just focus on feelings of your inhale and exhale, don't try to control your breathing, just feel it. You can do it on the go if you don't have time for formal meditation.
Buy a membership in a meditation or yoga centre with different classes of meditation, choose the one in your area. You can also go for individual classes with different teachers in that centre if you don't like to practice in a group.
Just try as many meditation teachers as you want and find something interesting for yourself.
Try to sing religious songs that you like while meditation (mantras, prayers or other). Just relax your mind and sing. It will give you amazing feelings, especially if you think how many people and for how many years have sung those songs while meditation.
You can also do it in a group or with a professional teacher, just find the right one in your area.
If you have too many thoughts in your head or even obsessive thoughts, observe them without any evaluations. They can amazingly help you with your meditation. And in some time you will realise that your thoughts come and go and they are not as huge as you thought.
You can use this method on the go if you don't have time for a formal meditation.