You can also advertise at local libraries and book stores and school and community newsletters. If you are a librarian or are working with a librarian, consider advertising for the group through flyers and publicity releases. Many book groups are led by the same facilitator at each meeting. Ideally, leadership should be rotated amoung the members. A group can chose to designate one host to do snacks and another to lead the discussion.
All groups benefit from an experienced facilitator being present and moderating the group.
Deciding on an age range to target for your book group often depends on the goals you have for the program. Mother daughter book groups can often span three to four grades. After school book groups might be more narrowly focused. Because reading ability starts to level out a bit more in older grades, high school book groups can span 9th to12th grade. If you find that your group is divided into two distinct camps of maturity or reading abilities, you may want to consider dividing into two groups.