We often underestimate the benefits of sex education (sexual health). With the advent of mobile, internet and TV, it is challenging to keep a child unexposed to the sexual content or sex education. It’s the utmost need for every child to have a safe childhood. Unfortunately, even adults of our society lack basic knowledge about sex education. “Little knowledge or false knowledge is always dangerous.” This book is about providing knowledge from a reliable and scientific source. This book is made to answer the curious minds, who are searching for answers on internet/digit media. It is useful for school and college students, teachers, parents, guardians, NGOs, health professionals.