I have not read all the responses to which quilt magazine but thought I would jump in.
Instead of a magazine how about a book?
One book I recommend to all my quilting students
"The Quilters Ultimate Visual Guild " is one that covers everything you need to know to get started and beyond. There are other good books out there and I have some of them, but this is my favorite.
a rodale book, Ellen Pahl, editor
Ann