2. Topical Topical lessons allow students to study what maybe especially relevant to that particular group. For example, a church may wish to train all of its new members in basic theology. So topical lessons can be given on such subjects as the Trinity, the Fall of Mankind, and the Doctrine of Salvation. Many of the same principles used in preparing topical sermons apply to preparing topical lessons. 3. Character Study Character studies allow teachers to customize lessons for participants. For example, a teacher might have character studies of the women in the Bible fora class of women.