Welcome to the site :cool:
Be sure and go to your User CP and update information relating to your location, type of riding, etc. After that grab a spot on the couch and tell us a bit about yourself. How long you have been riding, what kind of riding you prefer, where you are located, etc. We will do our best to hook you up with some fellow dirt bike enthusiasts.
Check out the
General Bike Repair and
Thumper Central forums for information relating to your questions. If you don't find your info with search, post up a question and you will get your answers in spades.
Check out the
MX / SX / AX Forum for track talk. That is where the track queens hang.
Again, welcome to the site, and shout if you have any questions!