As you are climbing, inform the group around you that you are a newbie and to give you a wide berth traveling down hill. My biggest advice is go as slow as you feel comfortable going but please stay in your line, do not swerve. Those going faster will pass hopefully on your left but it's hard when a rider is "squirrelly". Remember to call out, in a loud voice, any actions you plan on taking such as slowing or stopping and also call out debris or hazards. Best also to stay as far right as possible allowing the faster riders the left side to pass.