I want to meditate, any help?

i've been wanting to meditate for a while, but i've been hearing a lot of ways of doing it, one of them clearing your mind of all though, another concentratting on heavy breathing, another inhaling through the nose and exhaling through the mouth. and i've tried them all with no effects, im aware that it takes devotion and practice but i really want to know what the best way is. Any help?