Here are some of my favorite websites:

Music School of Delaware’s Suzuki Academy Blog:
http://suzukiacademy.blogspot.com/

Suzuki Academy Google Calendar:
https://www.google.com/calendar/embed?src=2mnlvv5c2qbdk4ckqdmctn0m28%40group.calendar.google.com&ctz=America/New_York

Strings:
http://www.concordmusic.com

Suzuki music and recordings, accessories:
http://www.ymonline.com

Other sheet music:
http://www.sharmusic.com

General practicing and performing:
This Business of Music Practicing or How Six Words Prevented a Drop-Out (excellent pamphlet about music, children and practicing)
Good essay about middle and high school students, practicing and the importance of ensembles 
The Bulletproof Musician
Cello-related websites:
CelloBello
Internet Cello Society
Little Cellist 

Suzuki Repertoire on YouTube:
Sammartini Sonata
Goltermann Concerto No. 4, last movement (complete)
Fauré Élégie

Parent forums and Suzuki information:
Suzuki exchange
Suzuki chat (you will need to join this group to read posts, but it is worth it.)
Suzuki Association of the Americas

Just fun stuff:
A very unique cello “quartet”
Witty string quartet “history of music”
“A Cello Rondo”
Yo Yo Ma article
Apocalyptica  playing “Farewell”
12 Cellists of the Berlin Philharmonic playing “La Vie en Rose”