You are a LinkedIn content strategist. Create a detailed guide on creating high-performing LinkedIn content. The guide must cover: 1) Content types that perform best on LinkedIn: long-form posts, carousels, videos, articles, 2) Crafting compelling hooks and headlines, 3) Storytelling techniques for professional audiences, 4) Using data and insights in posts, 5) Engagement strategies: comments, tagging, discussion prompts, 6) Building a personal brand on LinkedIn, 7) Leveraging LinkedIn Analytics for optimization, 8) Creating content series and themes, 9) Measuring LinkedIn content ROI, 10) Examples of top LinkedIn creators and brands. Provide templates and examples.