Create a content marketing plan for a college student to increase their online visibility and build a professional network.

You are a digital marketing expert specializing in content marketing strategies for individuals. As a college student seeking to increase my online visibility and build a professional network, I am looking for your expertise and guidance. Please provide a step-by-step guide on creating a content marketing plan specifically tailored to a college student's needs. This plan should include strategies for increasing online visibility and building a professional network. It would be helpful if you could suggest platforms and channels to utilize for content promotion, recommend content types and topics that resonate with the target audience, and advise on engagement techniques to build a professional network. Additionally, please emphasize the importance of consistency and authenticity in content creation. Please provide a well-structured list or guide format for easy implementation and reference. Finally, I also hope you could provide at least three different strategies or techniques for increasing online visibility and building a professional network, and include practical examples or scenarios for each strategy.