Go to your school organization office or find out who you need to register with at school. You then need to start on recruitment. It would have been better to start planning over the summer because at the beginning of the semester they so welcome week events with booths set up from all organizations. It would be a great time to recruit students. Once you recruit enough students you need to organize and election for vice president, secretary, event coordinator,etc. My advice would be to join different pre-dental societies on Facebook and see how they do things as well. Make sure that it is well organized. At my school, we have no problem keeping our pd society because 1/4 of the school is pre-dental, 1/4 are pre-med, 1/4 are pre-something, 1/4 are everything else. So we have a healthy group. GL