Join one series or the full program!
Being successful on the trails is about more then just riding. The stronger you are, the more capable you will be at maneuvering your bike and saving yourself from crashes. The more skills you develop off the trials the more you muscles will know what to do when you get out there. And the more you ride, the easier it will become.
4 weeks of TRX fitness
4 weeks of skill development
4 weeks of on trail practice