The fundamental exercises for expanding clarinet tone and range
Ten jazz licks from Eddie Daniels, Benny Goodman, Artie Shaw, and others explained and demonstrated.
This is an amazing site of clarinet recordings and clarinet music. Also contains chamber music that involves the clarinet as well as woodwind quintet sheet music.
This is a forum all about Jazz Clarinet. You can find some excellent resources here, but you'll need to make a free log in to download files.