I've found on youtube a series of Ifor James videos explaning didactical things like, how to produce sound, how to atack how to hold the horn...
The channel was created no more than a month and there are videos that were added 6 days or even 3 days ago, so I think we could expect more videos en the next days
There's also a video about Till...
http://www.youtube.com/user/hornchannel
You can also visit his website:
http://www.ifor-james.de
