If you have broad experience and knowledge of a topic you can leverage that as a book. But don’t stop with just one book. Write multiple books – a series even. And then, use that to expand into other areas. Here are some key reasons to consider this approach.
You may have learned hard-and-fast grammar rules in middle school, but professional copy editors don't always agree with one another, even on basic issues like comma placement. Copy editor Ashley Petry describes two warring grammar camps (Chicago Manual and Associated Press) and helps you figure out when (and how) to follow each set of rules.