I think it's important to choose a good topic, and think of some sub-topics for discussion points.Scan the internet and cut and paste statements for your handout (you may need to simplify them). You can put them under a heading 'True or False?' or organise them however you like.
I did my first conversation class on Happiness, so we began by discussing what the word means for each person, then we looked at a quote I had printed on a handout and discussed that. We discussed what happiness means in Korean culture in general - the importance of family, etc, and after I directed them towards the question of whether money can buy happiness.