How to Learn Mindfulness Meditation?

There is so strong an interest in mindfulness these days, because it's been written up so much in the cover of time magazin. So my sense of it is that there are not a lot of people who are just trained to give a clear, cogent, precise definition of what that practice is. And i feel confident saying that at the end of this hundred hour programm, you would be able to give a very simple, direct answer to what it is and how to do it.