General suggestions for a bible study:

• Pray at your bible study
• Throw some variety in:
  • Take a week to go out to eat
  • Spend one meeting just praying for each other
  • Do a topical study one week and a contextual study the next
• Do other activities with the participants besides just the bible study:
  • Go camping one weekend
  • Catch a flick together
  • Meet up for a MarioKart 64 tournament
• Make sure everybody gets a chance to speak:
  • Ask questions to the people that haven't spoken much
  • Make sure everyone knows who everyone else is
  • Don't let anyone feel like they aren't a part of the group
  • Do not let anyone talk the whole time (even the leader)
• It is better to let people draw good conclusions for themselves if possible (as opposed to the leader telling them everything)
• Avoid tangents
• Don't go long