This document is the first volume in a series of eight "question and answer" booklets developed in Kyrgyzstan by UNICEF and the GTZ. Similar booklets have been initially developed by GTZ in Tanzania and then adapted to different countries. The present series consists of an adaptation to the needs and cultural context of Kyrgyzstan, based on a survey realized among Kyrgyz adolescents. It is designed to provide young people with the necessary knowledge to make healthy choices for themselves and their peers. The series contain basic facts about human physiology and reproduction, sexuality, prevention of unwanted pregnancies, HIV/STIs, drugs & alcohol. The present document deals with 29 questions about growing up, puberty and adolescence. Some of the questions asked are the following: "What are hormones?", "What are the physical manifestations of puberty?", "What is depression?", "Why do adolescents often have acne on the face?", ... The answers vary on length but all provide clear and precise information on the matter concerned.