From time to time I will post web links that I think may interest you. If you want some new ones, just ask me.To rent instruments, for repairs, bow rehairs, purchase new instruments, etc., I go to Paul Strelau's shop in Fairport.
To order music:
Dallas Symphony Orchestra's excellent site for children.
For music theory:
Note for parents: you can download the software from this site. It's free, and allows your children to use the site without needing to be online.