It was from 04 to 06 September 2015 in tabarka,a coastal town located in north-western Tunisia. Youth Ambassadors had many sessions in this training: *the role of the Ambassador *Techniques of comunication *Advocacy *How to make a campaign *Path and harms of drug addiction *Psychology of drug addicted and how to deal with them We also did some "artistic" sessions: *flashmob : dance of MOP *plays showing harms of drugs addiction