Riding with a group can be one of the most exciting and rewarding experiences you can have.  It is important, however, that you consider your experience level.  If you are a beginner and still learning to negotiate turns & the concepts of straight line breaking and breaking in a turn along with maintaining balance while riding slow, group riding is not a good place to learn how to ride.   For the safety of yourself and others, please be proficient at basic riding before you join a group.