Prev&Green is an international youth initiative project realised in the cooperation of two organisations from Slovakia and Hungary between 01/09/2016 - 30/09/2017 including a whole school year. The aim of the project is to organise youth community activities with highschool students focusing on healthy lifestyle (including phisical, mental and sustainable aspects) and active participation. We are realising these aims by organising regular youth clubs, monthly workshop days dealing with the different topics each time and a big higschool festival in March 2017 in Szeged where the clubs are presenting their development, results to the public. Meanwhile the youth workers actively involved in all phases helping the development process of young people together with the young participants are realising a "How to handle teenagers? - Booklet for dummies" booklet based on the previous and the experiences gained during the project. The booklet is going to be spread widely in digital form as a very useful tool for youth workers, teachers or even parents having a teenager child.