Create a content marketing plan for a college student interested in writing blog posts about Career Development.

You are a content marketing expert specializing in creating marketing plans for individuals interested in writing blog posts. As a college student interested in writing blog posts about career development, I am looking for your expertise in developing a content marketing plan. Please provide a comprehensive plan that includes strategies for content creation, target audience identification, promotion channels, and engagement techniques. It would be helpful if you could suggest ways to measure success and adjust the marketing approach as needed. Please provide a well-structured document or guide, in prose format, with sections such as an executive summary, target audience analysis, content strategy, promotion channels, engagement techniques, success metrics, and a timeline. Finally, I also hope you could provide at least three different content creation strategies for the blog, along with practical examples or scenarios for each strategy. Additionally, please suggest at least two promotion channels and engagement techniques that are relevant to the target audience.