I recommend a general content marketing strategy for my employer and all my clients. This one-page summary of that strategy is a high-level, broad document.
It includes this foundational thought:
When someone has a question about [your niche], their first thought should be: “[your name] can answer that question for me!”
and this proposed approach to fulfilling that objective:
Become a trusted source of knowledge through creating, soliciting, curating, and acquiring massive amounts of in-depth, helpful content and disseminating that content as widely as possible. Over time, through the dissemination of your content, you will come to be known as a definitive authority on your niche.