Well this page will eventually have enough links to make your eyes bug out of your head. If you have a link or two that you feel should be posted on here feel free to email me and let me know about it. Most of these pages have a huge amount of information anyone can learn a lot from these pages. If you are looking for other schools of music click here Well enough about that on to the links.
Michael Northsworthy - as if this page of links wasn't enough check out his page of links wow!
International Clarinet Association
Sneezy - a huge amount of information about clarinet.
Robert Vinson (Ligatures)
Advantage USA - discount reeds
Clarinet Midi's - you can have him send you midi files of accompaniment then play it on your computer as you play the solo part. Very helpful you learn the accompaniment before you even get with your accompanist