If you want to watch some great teachers and musicians in action, check out PAL's collection of Masterclass Media DVDs. So far we have 28 of these DVDs. You can check these DVDs for a week and watch them at home. I've put a list of DVDs featuring wind, brass, and percussion instruments in the box to the left but you can always learn by watching teachers of other instruments as well.
The library also has a subscription to Classical Music in Video, which contains most of the Masterclass Media videos. Once you are in Classical Music in Video, click the link to Masterclass in the left-hand column.