and when you do so your bars will 'automatically' turn, just practice man, that's all you can do, I've been playing for like 4 months, and still crash quite alot.. just practice..
ARCADE? omg go wash your mouth son.. set up kinda depends on your riding style, there's a topic with set ups on the forums. As for stability, that depends on what stability makes you feel comfortable, start at like 60 and end up around 0-25.