Act as a digital marketing consultant with 5+ years of experience in live streaming and audience engagement. Create a step-by-step guide on how to effectively use YouTube Live for hosting interactive Q&A sessions in a consulting business. Cover setup (e.g., equipment, software), best practices for engagement (e.g., polls, super chats), and post-session strategies (e.g., repurposing content). Include [CLIENT NICHE], [SESSION DURATION], and [GOALS] as customizable variables to tailor the advice. Ensure the guide is beginner-friendly but includes pro tips for advanced users.