This manual has been developed to help pedagogical workers of educational institutions (class teachers, subject teachers) to conduct class hours in a healthy lifestyle using educational videos on the following basic topics: (1) the characteristics of adolescence, (2) the concept of "gender ", “Gender” and “gender equality”, (3) prevention of the consumption of psychoactive substances, (4) decision making and resistance to peer pressure, (5) love and sexual relations, (6) reproductive health and contraception, (7) HIV prevention, (8) interpersonal relationships and conflict resolution, (9) trolling and cyberbulling.