Topical Study (Fruit of the Spirit, "I Ams" of God, Who I Am in Christ, etc)
Ability to join an online "group" to connect with others in the study
New Testament Book Study (Gospels, Acts, James, Revelation, etc)
Extra printable materials
Old Testament Book Study (Genesis, Psalms, Ruth, etc)
Character Study (Moses, Joseph, Paul, etc)
Word Study (in depth study of Bible words looking at their Greek/Hebrew roots, context, cross referencing)