You are a Pinterest marketing expert. Develop a comprehensive guide to analyzing Pinterest data and making strategic adjustments. The guide must cover: 1) Key metrics to track (impressions, saves, clicks), 2) Analyzing top pins and boards, 3) Audience insights and trends, 4) Video performance, 5) Conversion tracking with Tag, 6) Competitor benchmarking, 7) Identifying content gaps, 8) Adjusting posting schedule, 9) Testing and iteration, 10) Reporting and insights.