General
Ideas and inspirations:
Charlotte Higgins of The Guardian on the Dudamel (click)
Scanned article by same author. (click)
Trombone
There are as many perpectives as there are players. However here are a few who I believe we can learn from. If their words of advice seem to be in conflict then we may have to think for ourselves which is not a bad way to learn!
These websites speak of the visions, generosity and enthusiasm of their authors, so go ahead and learn - it's free!
Ian Bousfield: all sorts of tips, wisdom and consise videos from a classical master of the trombone.
Weston Sprott: the same but from an American perspective.
Ed Neumeister: another perspective.