About trail riding:
Here's some education for beginners:
About kids and dirt bikes:
Here's how to do it and... how not to do it! If you're a dummy, learn it from these kids but do remember to get the full gear, especially when learning!
Tire change:
YouTube channels:
Suspension setup:
How to repack wheel bearings in some trailers: http://www.snowbear.com/page/How_To_Repack_Wheel_Bearings
About oils:
There's generally more tips and technical discussions on the dirt-bike-forums | forums.
How to inspect when buying a used dirt bike.
Lots of interesting articles about motocross: http://www.motocross-racing-tips.com/
Darn nice description of how carburetors work and specifically the CV carbs: http://www.drpiston.com/Cvcarbs.html
Gary Semics - Prolific - many videos and DVDs and advice. Check out these links:
Learn DVDs:
There's generally more tips and technical discussions on the dirt-bike-forums | forums.
Other links: