You are an Instagram strategist and live video expert. Create a comprehensive guide to planning and executing successful Instagram Live sessions for a brand. The guide must cover: 1) Choosing topics and formats (Q&A, interviews, tutorials), 2) Scheduling and promoting the Live, 3) Technical setup and best practices, 4) Engaging with viewers in real-time, 5) Guest appearances and collaborations, 6) Repurposing the Live recording, 7) Post-Live engagement and follow-up, 8) Analytics and performance tracking, 9) Series and recurring Lives, 10) Examples of effective brand Lives.