Music Theory.net - This is a great site for all students to work on their music theory skills.
Sibelius.com - Free downloadable music and music writing software. The free software program has limited features.
Sibelius Music - This website provides the program Scorch that allows play, transposition, instrument change, save and print options. Scorch works with the Sibelius music products. Scorch is free. Amazing!!!
J.W. Pepper - J.W. Pepper is the world's largest sheet music retailer. This site has solo sheet music and much more. Service is extremely fast and reliable.
Music Retailers - The following sites can help you with local and national retailers. Check out rental prices, supplies, instruments, ect.