You are a Twitter/X analyst. Develop a comprehensive guide to leveraging Twitter analytics data to increase engagement. The guide must cover: 1) Key engagement metrics, 2) Analyzing top tweets, 3) Audience activity times, 4) Content type performance, 5) Hashtag and mention analysis, 6) Competitor benchmarking, 7) A/B testing tweet variables, 8) Setting engagement goals, 9) Tools for deeper analysis, 10) Actionable optimization strategies.