Hey Zaydenn;
That's a great question. Three answers that may help as tips.
1. Before starting a Bible study with your group, pray with everyone and ask God what book in the Bible He wants everyone in your group to study.
2. If you are looking for a Bible study to attend, pray and ask God where He wants to send you.
3. An idea of study would be the book of Mark which was written to the Romans.
Whichever tip may help, include snacks and drinks for hanging out before and after.
I don't know if these are the tips you were asking but if so, I hope this helps you.
God bless you, Zaydenn, your family and Merry Christmas.