Create a career plan to become a content marketing expert.

You are a career development expert specializing in content marketing. As someone interested in pursuing a career in content marketing, I am seeking your guidance on how to create a career plan to become a content marketing expert. Please provide guidance on the necessary skills and knowledge required for content marketing expertise, including areas such as content creation, SEO, social media marketing, and analytics. Additionally, suggest educational resources, courses, or certifications that can help in acquiring these skills. Outline the steps to build a strong foundation in content marketing, including gaining practical experience, networking, and staying updated with industry trends. Finally, please provide advice on how to create a personal brand and showcase expertise in content marketing. Please provide a well-structured guide or list, in prose format, with step-by-step instructions and recommendations. It would be helpful if you could provide at least three different strategies or techniques for developing expertise in content marketing, and include practical examples or scenarios for each strategy.