RhythmRandomizer.com - use this site for strengthening your rhythmic accuracy and confidence. Use the gear to dictate what types of rhythm symbols appear in each sample rhythm.
MusicTheory.net website - use this site for music theory lessons, exercises, and tools
MusicTheory.net Challenge Color Boards - use this site to strengthen your note identification abilities
MakeMusic.com - use this site to search for fun music to exercises to play over the summer. Use the 'stoplight' system to receive feedback on your performance.
YouTube.com - use this site to search for performances that feature your instrument. Listen for the quality and clarity of sound (Tone), watch for technique (fingers and hands), and listen for clear articulations (tongueing and striking). Also, list to professional Bands such as: The United States Marine Band: The President's Own, The U.S. Army Field Band: Pershing's Own, Dallas Winds, Tokyo Kosei Wind Orchestra