Buying a motocross bike? 10 points to best answer.?

I'll probably buy a used one. I have no idea of what one to get. I'm 14, girl, 5'4"-5"5', 107-110 pounds. What would be a good bike. I want to know ALL possible bikes. Any websites that will tell me what kind and what to look for when buying one would be great. Any advice and suggestions... show more I'll probably buy a used one. I have no idea of what one to get. I'm 14, girl, 5'4"-5"5', 107-110 pounds. What would be a good bike. I want to know ALL possible bikes. Any websites that will tell me what kind and what to look for when buying one would be great. Any advice and suggestions would be awesome. I have no experience and will probably teach myself will very little help of others. If I enjoy it I would probably get a better bike in the future so nothing to expensive right now but still any suggestions for the future is appreciated too. Thanks!
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