These are links that have helped me along my way as a writer, hopefully they'll help you too...
(Right now it's a jumble... to be organized later).
Next Gen Writers
Teens Can Write Too
Hilary W Graham's Website
Writer's Page Nikki
And My Favorite.... Go Teen Writers
Don't worry! There's much more coming soon.
If you guys have any other suggestions just email me at firstname.lastname@example.org.