Depending on your age I would start on a cr125 Honda. Honda is known for having very high quality bikes and can take a beating.
husquvarna
it depends, what brand is it
honda Husqvarna also makes a dirt bike!!!
who was the first dirt bike rider
they used the first dirt bike in ww1
DJL made the first dirt bike.
Yamaha made the first Yamaha dirt bike
Excel rims.
Scott and Cannondale!
That depends on what you are using it for. Obviously, if you are dirt biking, you should use a dirt bike, and otherwise use a street bike. Start out with what you are going to use the most - dirt (freestyle) or street racing.
poket bikes are gay. go with the dirt Dirt bike, definitely!
motor bike