u must overcome your fear in riding because that will limit you...if your that hesitant then you lose the chance to learn and enjoy...another piece of advice i must give u: trust only the reliable brands and stores of aftermarket motorcycle parts.
well, it depends. If you want to end up racing, or intend to race in the future, you can start off driving a dirt bike. but bear in mind that driving on the road is very different than driving on race tracks!
well, with your riding position, i guess you should be the one to figure it out because everyone hs different lenghts and styles of driving. to earn that, you should get along and get used to riding your bike. thats it! enjoy!