Sure; as a rough start to some easy to source material, here's some stuff specifically -
http://www.aunkai.net/eng/shop/index.html
http://www.youtube.com/watch?v=xzyPw-uJqw8
http://www.iay.org.uk/internal-strength/
You're probably /eventually going to have to involve yourself somewhat deeper than an acquaintance with 'exercises', as 'all buses may be motor vehicles, but not all motor vehicles are buses'.
It may be best to communicate with Dan specifically, seeing you're interested in how Dan does things. FWIW