We actually do many different things. Our main focus is providing free online video tutorials for those who want to learn Mandarin. We have a number of platforms, but our main one is currently YouTube. Our secondary focus is making audio based materials for the same purpose, to help people learn Mandarin. This is made up of a number of different audio options including audio books, podcasts and audio lessons.
UPDATE: Recently more and more people have been listening and responding to our podcast so that has taken a front seat in our current production schedule. We now also do Hangouts where we will get up to four people (plus anyone else who wants to listen), set fun tasks and homework and try and make people speak as much Chinese as possible. We also now hold 1on1 private lessons for people ready, willing and motivated to learn.