resources...  
Music Performance Links:  
SCSBOA honor band audition request The SCSBOA is the Southern California School Band and Orchestra Association. Every year, they audition high schoolers for their group of honor bands. This link will give the audtion requirments for the honor jazz and honor concert group.
Drum Corps International The best of the best of the bands sir! , an elite version of a marching band with brass, but without woodwinds.
Color Guard Links:  
Winter Guard Association of Southern California (WGASC) The Color Guard's corresponding association to SCSBOA for Southern California.
General Music Links:  
Music theory practice

Interactive lessons, practices (note reading in various clefs, key signatures, etc.), and utilities (like staff paper and chord helpers) to assist musicians and people taking an interest in reading and learning music. It requires Flash version 6.0 or higher for most aspects of the site..

Classical music reference and guide Glossaries of musical terms, biographies of classical composers, and explinations of the musical eras.
Online metronome Online tempo keeper for home practice.
Music Stores:  
J.W. Pepper music ordering site A great place to buy extra practice music and if you lose an original sheet, you can replace it by ordering the specific chart.
Dietz Bros. Music store A sponsor of the Mira Costa Band and a great resource for basic instrument supplies, convieniently located very close to Costa.
RDG Woodwinds Good online music store for clarinets, oboes, and bassoons.