Create a study group facilitator playbook for {{target_audience}} studying {{topic}}. The playbook should enable pairs to run a 90-minute session with a {{tone}} tone and a {{goal}} goal. Include sections: Overview, Prerequisites, Step-by-step Plays with timing, Metrics to Track, Troubleshooting Guide. Also include 4 session plan templates and resources. Keep under 600 words in Markdown. Paste any relevant background information after these instructions before running.