Target audience research

My target Audience will be girls of course (even though, open minded men should definitely read this for some actual useful information). The age range would be very extensive starting from girls as young as 13 to women on their 70s even! The information I’ll include will be relevant to girls of all ages. My audience will also be limited to English speakers so far and sold only in the United States being the place I reside in, but I will try to sell them in other English-speaking countries as well! I will also try to make it inexpensive so ladies all over, with different incomes, can enjoy the magazine!