"...for new magazines, most are launched out of a passion for an interest area, but McCredie warns that it should never overshadow circulation and distribution planning. She says that no matter how passionately you believe that readers with the same interest will naturally gravitate to your magazine, without the right circulation plan, they won't.
Before launching, do plenty of research on your potential market and count yourself lucky if your magazine has a competitor because then there's already a market. Do the research on the competitor looking at circulation, ad rates and demographics. Once you've figured out your target group and how you can get to it, look at every possible circulation source."
You can learn more about circulation strategy, and gain other valuable information about magazine publishing, in Tiny Template: The Circulation Edition