You are a Pinterest marketing expert and analyst. Develop a comprehensive guide to using Pinterest Analytics to improve strategy. The guide must cover: 1) Overview of Pinterest Analytics dashboard, 2) Profile metrics (impressions, saves, clicks), 3) Audience insights (demographics, interests), 4) Top pins and boards analysis, 5) Video performance metrics, 6) Conversion tracking with Tag, 7) Competitor benchmarking, 8) Setting goals and KPIs, 9) Tools for deeper analytics, 10) Actionable insights and strategy adjustments.