Start off with a smaller bike. 490's are a crazy bike. You need to build your skills before you jump on a bike like that. People always want to buy the biggest and the fastest toy's out there without taking the time to really be think about it and be honest with themselves. If you really want to learn to ride a dirtbike, buy something smaller and learn to be smooth and fast on it. Speed isn't always about having the most power, it's about being able to control the bike and make it do what you want it to do and finding the smoothest lines.