This is a blog with interesting tid-bits about anything piano/music related.  Look around and see what piques your interest - from learning about tuning and the insides of a piano to ideas for practicing and how to understand rhythms.

Check out the Piano Explorer website online for FREE! 

The San Fransisco Symphony has set up a website where you can find a music lab, different instruments in the orchestra, and play some music games. Check it out!

At the New York Philharmonic Kidzone you can find a game room, musicians' lounge, composers' gallery, instrument laboratory, a composition workshop, and much more!

At G Major Music Theory you can download music for free at your level!  They also have helpful theory pages and ways to improve your listening skills, which in turn helps you improvise and learn songs you hear but might not have music for.

At Noteflight you can set up a free account and begin writing your own music!