This is a well-thought-out educational material on puberty, sex, and gender.  While the cover says for the queers. In reality, this is a book that anyone who wants to look into the topics can read.  Centered for teens the text breaks down the basics of concepts around a topic that usually gets a general boy/girl-only dynamic.  Being inclusive in the text, having questions from teens answered at the end of each chapter, and drawings to show anatomy, it a well-thought-out book.