Print your own blank staff paper for writing music. You can choose how big to make the staff and add clef signs.
This page has a metronome you can use online. Click on "A440" to play a tuning note for your A string.
Free online exercises and lessons on music theory concepts
The online Petrucci Music Library is a virtual library containing all public domain music (not required to be paid for) available for all of the famous composers. You can search by time period or composer name. Most of the music is in PDF format.
An extensive music dictionary with pictures and audio examples
Learn about the elements of music theory
A free course about jazz history, theory, and improvisation
Games, composer information and inverviews with professional musicians
Interactive games and lessons
Learn about some of the most famous string players in history
Dallas' Classical Radio Station
Beginner's Guide to Building a Classical Music Collection
The International Society of Bassists