Adam Riemann has put together a bunch of cool videos. Check them out and then follow him on twitter - https://twitter.com/adamriemann
KTM 350EXC-F tips with Adam Riemann - Part 1
Front tyre replacement
Setup the front end with Chris Hollis - Part 2
Quick tricks with throttle and clutch, tricky obstacles - Part 3
Rebuilding at 50 hours, and some Endurocross footage - Part 4