Starting a study group is great! Here are my thoughts. Be yourself, be sincere, be open.
The first thing as a study group leader to keep in mind is that you lead. it's best to lead by example. This means be yourself, be sincere, be neutral as much as you are able at all times. This means regular attention to the individuals under your wing. Even though you are just starting out in the ILC curriculum, your skill level has less to do with growing your group than the example you set. Your primary role is to lead, then to teach.