Who is your target audience or ideal customer?
 

The process is so much easier and straightforward when you start with market research to identify demand in the marketplace.
When you look for common problems, desires that people express, then you understand exactly who makes up your targeted audience.
When you start the process with a product . . . then you must hunt to find people who might be interested in that product. It's a much more difficult starting point.
It's easier to identify an audience and then match a solution to their wants . . . instead of finding the solution first and then looking for people that might be interested in buying it.

Create Reader Personas. ...
Conduct User Surveys Regularly. ...
Use Google Analytics. ...
Find Your Target Audience On Facebook With Facebook Insights. ...
Find Your Target Audience On Twitter By Connecting To Your Twitter Followers Dashboard. ...
Run An Annual Audience Survey. ...
Monitor Your Social Activity.