The MIDI Basics page from TweakHeads Electronic Musicians Cafe. Has a good overview of MIDI, but also a sidebar to information on many other music technologies.

Welcome to the 8notes.com online Music Theory course. 46 Lessons introducing you to the most important concepts of music theory.

eMusicTheory.com provides online tools for teachers and students of basic music theory, everywhere.

Whether you're new to Sibelius or want to discover some helpful features, check out this series of web videos.

An interactive computer-based game for learning the recorder. The game contributes to musical awareness - rhythm and timing, fingering technique and coordination, correct and stable tone production, musical ear training, enhanced practice motivation, and

How Music Works is a comprehensive suite of multimedia tutorials which explain music in clear, simple language you can relate to.Packed with 115 topics in nine tutorials, and illustrated with 360 diagrams and 750 demonstration sounds, the tutorials start with the very basics of music and advance to topics which are valuable even for professional musicians.Whatever musical instrument or style you are interested in, these tutorials will be an essential source of information and guidance for years to come.