Overall, it's good to suggest that beginners hire a coach to teach for an hour, 100 yuan. Make your basic junior trail not wrestling. The coaches wear red clothes in the place where they get their school tools. They will take you four or five times. The majority of ethnic comrades are very good. Attention to speed control, belongs to high-risk sports, watching several speeds too fast, do you want to fall on your own back, do you want to rush into the crowd, shovel several, safety first.